<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
           xmlns:doiavs="http://www.doi.org/2010/DOISchemaAVS"
           xmlns:iso3166a2="http://www.doi.org/2010/iso3166a2"
           targetNamespace="http://www.doi.org/2010/DOISchemaAVS"
           elementFormDefault="qualified"
           attributeFormDefault="unqualified" version="2.3">
   <xs:import namespace="http://www.doi.org/2010/iso3166a2" schemaLocation="iso3166a2.xsd"/>
   <xs:annotation>
      <xs:documentation>Copyright 2023 The DOI Foundation</xs:documentation>
   </xs:annotation>
   <xs:simpleType name="agentRole">
      <xs:annotation>
         <xs:documentation>Allowed values for roles played by a party as an agent of a Creation.</xs:documentation>
         <xs:documentation>This is an open set. Other values may be registered with the IDF by any Registration Authority.</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
         <xs:enumeration value="Actor">
            <xs:annotation>
               <xs:documentation>A Performer of spoken (and sometimes silent) dramatic roles.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Author">
            <xs:annotation>
               <xs:documentation>A Creator of a lexical work (words).</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Composer">
            <xs:annotation>
               <xs:documentation>A Creator of a musical work.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="CorporateCreator">
            <xs:annotation>
               <xs:documentation>An Organization credited as a Creator of a Creation.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Creator">
            <xs:annotation>
               <xs:documentation>A creator of a Creation.</xs:documentation>
               <xs:documentation>This is a generic value which may be used when a more appropriate specific role (such as author or composer) is not available.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Director">
            <xs:annotation>
               <xs:documentation>A person responsible for the direction of Performers and other creative elements of a Creation.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="FundingBody">
            <xs:annotation>
               <xs:documentation>A Party responsible for the funding of a Creation.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Publisher">
            <xs:annotation>
               <xs:documentation>A Party making a Creation available to the public.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
      </xs:restriction>
   </xs:simpleType>
   <xs:simpleType name="associatedPartyRole">
      <xs:annotation>
         <xs:documentation>Allowed values for a role associated with a party.</xs:documentation>
         <xs:documentation>This is an open set. Other values may be registered with the IDF by any Registration Authority.</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
         <xs:enumeration value="Author">
            <xs:annotation>
               <xs:documentation>A party known as a creator of lexical works (words).</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="BookPublisher">
            <xs:annotation>
               <xs:documentation>A party known for publishing books.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Composer">
            <xs:annotation>
               <xs:documentation>A party known as a creator of musical works.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="CorporateCreator">
            <xs:annotation>
               <xs:documentation>An organization known for being credited as a creator of creations.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Creator">
            <xs:annotation>
               <xs:documentation>A party known as a creator of creations. This is a generic value which may be used when a more appropriate specific role (such as author or composer) is not available.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="DigitalServiceProvider">
            <xs:annotation>
               <xs:documentation>A party known for providing digital content through the internet, a telecom network or other means of carrier-less delivery.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="JournalPublisher">
            <xs:annotation>
               <xs:documentation>A party known for publishing journals.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="VideoServiceProvider">
            <xs:annotation>
               <xs:documentation>A party known for providing scheduled or on-demand video services (for example, audiovisual content delivered through tv, satellite, cable or internet media).</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
      </xs:restriction>
   </xs:simpleType>
   <xs:simpleType name="character">
      <xs:annotation>
         <xs:documentation>Allowed values for the types of character in which the content of a referentCreation may be expressed.</xs:documentation>
         <xs:documentation>The values in this element are drawn from the RDA/ONIX Framework for Resource Categorization.</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
         <xs:enumeration value="Image">
            <xs:annotation>
               <xs:documentation>Content expressed in line, shape, mass and/or other visually-realized forms.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Language">
            <xs:annotation>
               <xs:documentation>Content expressed in human or machine-readable language.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Music">
            <xs:annotation>
               <xs:documentation>Content expressed in musical notes.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Other">
            <xs:annotation>
               <xs:documentation>Content expressed in a form other than language, music, or image.</xs:documentation>
               <xs:documentation>'Other' includes other forms of communicating phenomena, qualities, etc., perceived directly through the human senses (for example, natural or machine-generated sounds, aromas, textures as well as those that cannot be perceived directly through the human senses (for example, electromagnetic waves).</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Restricted">
            <xs:annotation>
               <xs:documentation>A Creation identified within a restricted DOI Application Profile for which kernel metadata values are not generally available.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
      </xs:restriction>
   </xs:simpleType>
   <xs:simpleType name="creationIdentifierType">
      <xs:annotation>
         <xs:documentation>Allowed values for types of creationIdentifier.</xs:documentation>
         <xs:documentation>This is an open set. Other values may be registered with the IDF by any Registration Authority.</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
         <xs:enumeration value="Ad-ID">
            <xs:annotation>
               <xs:documentation>An Ad-ID, a 12-character identifier used by the advertising industry for identifying advertising assets, described at www.ad-id.org.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="AMG">
            <xs:annotation>
               <xs:documentation>An All Media Guide Identifier, an identifier for entities (artists, music, etc.) in the AMG database now maintained by Rovi.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Baseline">
            <xs:annotation>
               <xs:documentation>A Baseline Identifier, a 7-digit identifier for audiovisual works.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="cIDF">
            <xs:annotation>
               <xs:documentation>A Content ID Forum Identifier (version 2.0 rev 1.1), specified at http://www.npo-ba.org/cid/cIDfSpecV2R11E.pdf.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="CRID">
            <xs:annotation>
               <xs:documentation>A Content Reference Identifier, an URI for content created by the TV-Anytime forum and described in RFC 4078.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="DOI">
            <xs:annotation>
               <xs:documentation>A DOI Name issued under the authority of the International DOI Foundation.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="EAN13">
            <xs:annotation>
               <xs:documentation>An International Article Number (formerly European Article Number), a 13-digit identifier for products.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="EditionNumber">
            <xs:annotation>
               <xs:documentation>An Identifier of a Creation which denotes its edition.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="EidrContentID">
            <xs:annotation>
               <xs:documentation>An EIDR ID which identifies a Creation.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="GRid">
            <xs:annotation>
               <xs:documentation>A Global Release Identifier, an 18-character identifier for releases of music over electronic networks as defined by IFPI.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="IMDbID">
            <xs:annotation>
               <xs:documentation>An Internet Movie Database (IMDb) Movie ID, a 7-digit identifier for AudiovisualWorks issued by the IMDb.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="ISAN">
            <xs:annotation>
               <xs:documentation>An International Standard Audiovisual Number, the ISO Standard Identifier for AudiovisualWorks as defined in ISO 15706.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="ISBN10">
            <xs:annotation>
               <xs:documentation>An International Standard Book Number, the ISO Standard Identifier for books as defined in ISO 2108, in its 10-digit form.</xs:documentation>
               <xs:documentation>The isbn10 is now deprecated but is included in this schema for legacy purposes.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="ISBN13">
            <xs:annotation>
               <xs:documentation>An International Standard Book Number, the ISO Standard Identifier for books as defined in ISO 2108, in its 13-digit form.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="ISRC">
            <xs:annotation>
               <xs:documentation>An International Standard Recording Code, the ISO Standard Identifier for SoundRecordings as defined in ISO 3901.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="ISSN">
            <xs:annotation>
               <xs:documentation>An International Standard Serial Number, the ISO Standard Identifier for published Serials as defined in ISO 3297.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="ISTC">
            <xs:annotation>
               <xs:documentation>An International Standard Text Code, the ISO Standard Identifier for textual works as defined in ISO 21047.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="ISWC">
            <xs:annotation>
               <xs:documentation>An International Standard Musical Work Code, the ISO Standard Identifier for musical works as defined in ISO 15707.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="IVA">
            <xs:annotation>
               <xs:documentation>An Internet Video Archive Identifier, a 7-digit identifier for trailers, defined by the Internet Video Archive.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="MUZE">
            <xs:annotation>
               <xs:documentation>A MUZE Identifier, an 8-character identifier for music songs in the MUZE database now maintained by Rovi.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="PII">
            <xs:annotation>
               <xs:documentation>A Publisher Item Identifier, a 17-character identifier based on ISSN and ISBN that is used commonly by publishers for journal articles.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="ProprietaryIdentifier">
            <xs:annotation>
               <xs:documentation>An Identifier from a scheme which is proprietary to a particular party.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="SMPTE-UMID">
            <xs:annotation>
               <xs:documentation>A Unique Material Identifier, a 32-byte identifier for audiovisual Creations as defined in  SMPTE 330M-2004.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="TRIB">
            <xs:annotation>
               <xs:documentation>A Tribune Media Services Unique ID, a 14-character identifier for audiovisual works.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="TVG">
            <xs:annotation>
               <xs:documentation>A TV Guide Identifier, a 6-digit identifier for televised audiovisual works.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="UPC">
            <xs:annotation>
               <xs:documentation>A Universal Product Code, a 12-digit identifier for products.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="URI">
            <xs:annotation>
               <xs:documentation>A Uniform Resource Identifier, an identifier for WebResources as defined in IETF's RFC 3986.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="URN">
            <xs:annotation>
               <xs:documentation>A Uniform Resource Name, an identifier for WebResources as defined in IETF's RFC 2141.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="UUID">
            <xs:annotation>
               <xs:documentation>A Universally Unique Identifier, an identifier with 32 hexadecimal digits for [Resources] described in  ITU-T Rec. X.667 and IETF RFC 4122.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
      </xs:restriction>
   </xs:simpleType>
   <xs:simpleType name="creationDateType">
      <xs:annotation>
         <xs:documentation>Allowed Values for types of creationDate.</xs:documentation>
         <xs:documentation>This is an open set. Other values may be registered with the IDF by any Registration Authority.</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
         <xs:enumeration value="PublicationDate">
            <xs:annotation>
               <xs:documentation>A date which is the publication date of a creation.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="ReleaseDate">
            <xs:annotation>
               <xs:documentation>A date which is the release date of a creation.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
      </xs:restriction>
   </xs:simpleType>
   <xs:simpleType name="creationNameType">
      <xs:annotation>
         <xs:documentation>Allowed Values for types of creationName.</xs:documentation>
         <xs:documentation>This is an open set. Other values may be registered with the IDF by any Registration Authority.</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
         <xs:enumeration value="AbbreviatedTitle">
            <xs:annotation>
               <xs:documentation>A Title which is a shortened form of another Title.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="DistinctiveTitle">
            <xs:annotation>
               <xs:documentation>The Title by which a Creation is normally known.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="FormerTitle">
            <xs:annotation>
               <xs:documentation>A Title by which a Creation was once known.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Name">
            <xs:annotation>
               <xs:documentation>A Name of a Creation.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="PrincipalTitle">
            <xs:annotation>
               <xs:documentation>A Principal Title of a Creation.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Title">
            <xs:annotation>
               <xs:documentation>A Title of a Creation.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="TranslatedTitle">
            <xs:annotation>
               <xs:documentation>A Title which is a translation of another Title.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
      </xs:restriction>
   </xs:simpleType>
   <xs:simpleType name="creationStructuralType">
      <xs:annotation>
         <xs:documentation>Allowed values for a structuralType of a Creation.</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
         <xs:enumeration value="Abstraction">
            <xs:annotation>
               <xs:documentation>A Creation which exists as a concept and is recognised only through one more more physical, digital or spatio-temporal Manifestations.</xs:documentation>
               <xs:documentation>An abstraction (sometimes known as a 'work' or 'abstract work') represents the content of a creation, regardless of the carrier or media in which it is expressed. For example, the play 'Hamlet' is an abstraction which has been expressed in many performances, printed books, films, broadcasts and more recently in digital media.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Digital">
            <xs:annotation>
               <xs:documentation>A Creation which is expressed in digital form.</xs:documentation>
               <xs:documentation>A digital creation is entirely made of digital bits and so may be perceived only through a computer or other intermediary device. For example, an audio CD is not itself a digital creation but a physical one, but it contains several digital creations (the individual tracks).</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Performance">
            <xs:annotation>
               <xs:documentation>A Creation which is expressed in a transient form.</xs:documentation>
               <xs:documentation>A performance describes a 'spatio-temporal' creation, such as a speech, a play or the playing of a piece of music. It may be recorded for reproduction, but the creation itself is only perceivable in transient form.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Physical">
            <xs:annotation>
               <xs:documentation>A Creation which is expressed in physical form.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Restricted">
            <xs:annotation>
               <xs:documentation>A Creation identified within a restricted DOI Application Profile for which kernel metadata values are not generally available.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
      </xs:restriction>
   </xs:simpleType>
   <xs:simpleType name="creationToCreationLinkRole">
      <xs:annotation>
         <xs:documentation>Allowed values for roles played by a Creation in relation to another Creation.</xs:documentation>
         <xs:documentation>This is an open set. Other values may be registered with the IDF by any Registration Authority.</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
         <xs:enumeration value="AlternateContent">
            <xs:annotation>
               <xs:documentation>A SupplementalResource in an AudioVisual Creation which is synchronized to the original Creation (for example, an alternate audio track or camera angle).</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Chapter">
            <xs:annotation>
               <xs:documentation>A Chapter of the linked Creation (that is, a formal subdivision of lexical Creation).</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Clip">
            <xs:annotation>
               <xs:documentation>A short excerpt of a longer Audio or AudioVisual Creation, often made for promotional or preview purposes but which may also be made available commercially.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="CueSheet">
            <xs:annotation>
               <xs:documentation>A Cue Sheet for the linked Creation (that is, a metadata file identifying Creations (typically music) which are included in a TVProgramme, CD, DVD or other Audio or AudioVisual Creation).</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Derivation">
            <xs:annotation>
               <xs:documentation>A Creation made, in whole or part, from the linked Creation. Derivation is the most general term to cover all forms of adaptation, versioning, performing, fixing and abstracting of one Creation from another, and can be used when the specific type of derived relationship is undefined or unclear.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Edit">
            <xs:annotation>
               <xs:documentation>A recorded Performance of a Film or other AudioVisual Creation. A Creation playing the role of Edit always has the structuralType of 'Performance'.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Edition">
            <xs:annotation>
               <xs:documentation>A published version of a textual or visual Creation in which some of the original form and/or content has been re-ordered, changed or omitted.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Episode">
            <xs:annotation>
               <xs:documentation>An Episode of a linked Creation (that is, a Part of a Series broadcast as a single complete programme).</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Fixation">
            <xs:annotation>
               <xs:documentation>A persistent Manifestation of the linked Creation. Fixations include all types of digital files or physical carriers on or in which content is fixed by digital or analogue methods. </xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="IsSameAs">
            <xs:annotation>
               <xs:documentation>A Creation that is the same as the linked Creation.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Part">
            <xs:annotation>
               <xs:documentation>A Creation that is part of (that is, wholly contained within) the linked Creation (for example, an illustration within a book, a volume of an encyclopaedia).</xs:documentation>
               <xs:documentation>This is a generic value which may be used when a more appropriate specific part role (such as chapter) is not available.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Performance">
            <xs:annotation>
               <xs:documentation>A Performance of the linked Creation (for example, a recorded performance of a musical work).</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="PromotionalResource">
            <xs:annotation>
               <xs:documentation>A Creation which promotes the use of the linked Creation.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Season">
            <xs:annotation>
               <xs:documentation>A Season of the linked Series.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="SharesContent">
            <xs:annotation>
               <xs:documentation>A Creation that shares some content with the linked Creation (for example, two books which have common Chapters, or a TV show that contains an excerpt of a Film).</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="SupplementalResource">
            <xs:annotation>
               <xs:documentation>A Creation which accompanies the linked Creation (this includes, for example, all kinds of preface or epilogue in a textual Creation, or trailers or outtakes in an Audiovisual Creation).</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="TakesContent">
            <xs:annotation>
               <xs:documentation>A Creation that contains content coming from one or more places in the linked Creation (for example, a text which contains some paragraphs from a pre-existing text). The content may or may not be identified as a distinct Part.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Translation">
            <xs:annotation>
               <xs:documentation>A Translation of the linked Creation (that is, whose words are expressed in a different language from its Source).</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Undefined">
            <xs:annotation>
               <xs:documentation>A Creation with a relationship with the linked Creation which is unknown or not covered by the available options.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Version">
            <xs:annotation>
               <xs:documentation>A Version of the linked Creation (that is, a version which updates and replaces the previous version).</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
      </xs:restriction>
   </xs:simpleType>
   <xs:simpleType name="creationType">
      <xs:annotation>
         <xs:documentation>Allowed Values for types of Creation.</xs:documentation>
         <xs:documentation>This is an open set. Other values may be registered with the IDF by any Registration Authority.</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
         <xs:enumeration value="Article">
            <xs:annotation>
               <xs:documentation>A non-fictional text in prose form (typically between a few paragraphs and a few pages in length) included with others in a Publication to provide information and/or opinion.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Blog">
            <xs:annotation>
               <xs:documentation>A blog (weblog) on a website.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="BlogEntry">
            <xs:annotation>
               <xs:documentation>An entry in a Blog.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Book">
            <xs:annotation>
               <xs:documentation>A non serial Creation, capable of being expressed in printed form with multiple bound pages and covers, published with a distinct Title and not as part of another Publication unless it is set of similar Resources. A DOI applied at this level may refer to a Book which appears in physical, digital and audio forms.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="BookChapter">
            <xs:annotation>
               <xs:documentation>A Chapter of a Book.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="BookSeries">
            <xs:annotation>
               <xs:documentation>A Series of Books.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Chapter">
            <xs:annotation>
               <xs:documentation>A formal subdivision of a lexical Creation.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="ClinicalTrialProtocol">
            <xs:annotation>
               <xs:documentation>A chronological Report on a series of events which is a part of a clinical trial.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Clip">
            <xs:annotation>
               <xs:documentation>A short excerpt of a longer Audio or AudioVisual Creation, often made for promotional or preview purposes but which may also be made available commercially.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="ConferenceProceedings">
            <xs:annotation>
               <xs:documentation>A Publication consisting of contributions presented at a conference.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="ConferenceProceedingsSeries">
            <xs:annotation>
               <xs:documentation>A Series of ConferenceProceedings.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="CoursePack">
            <xs:annotation>
               <xs:documentation>A collection of journal articles, BookChapters and/or other components making up reading materials for an academic course.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="CrystalStructure">
            <xs:annotation>
               <xs:documentation>A Dataset describing the structure of a crystal.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="CueSheet">
            <xs:annotation>
               <xs:documentation>A metadata file identifying Creations (typically music) which are included in a TVProgramme, CD, DVD or other Audio or AudioVisual Creation.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Dataset">
            <xs:annotation>
               <xs:documentation>A Set of numeric and related data (typically associated with scientific research).</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="DictionaryEntry">
            <xs:annotation>
               <xs:documentation>An entry in a dictionary.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Ebook">
            <xs:annotation>
               <xs:documentation>A Book published in downloadable digital form.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="EncyclopaediaEntry">
            <xs:annotation>
               <xs:documentation>An entry in an encyclopaedia.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Figure">
            <xs:annotation>
               <xs:documentation>An image, table or other graphical feature which is an integral part of a lexical work.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Film">
            <xs:annotation>
               <xs:documentation>An AudioVisual Creation, normally of at least 40 minutes duration, first played in a movie theatre (in the US) or a cinema (in most of the rest of the world), or released directly to video.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="InteractiveResource">
            <xs:annotation>
               <xs:documentation>A Visual Creation not intended to be viewed in linear fashion (for example, DVD menus, interactive TV overlays, customized players).</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Journal">
            <xs:annotation>
               <xs:documentation>A Periodical principally consisting of Articles contributed by expert authors, with a specific theme, subject area and target audience, normally of a scholarly, scientific and/or technical nature.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="JournalArticle">
            <xs:annotation>
               <xs:documentation>An Article in a Journal.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="JournalIssue">
            <xs:annotation>
               <xs:documentation>A collection of Articles published together in one or more fixations representing a single issue of a Journal. Typically a journal issue will be identified with a specific date of publication.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="JournalVolume">
            <xs:annotation>
               <xs:documentation>A numbered Set of JournalIssues, normally representing the issues published in a specific period such as a calendar year.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="LearningObject">
            <xs:annotation>
               <xs:documentation>A Resource for use in teaching and learning.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="MedicalCaseReport">
            <xs:annotation>
               <xs:documentation>A Report on a medical case.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="MovingImage">
            <xs:annotation>
               <xs:documentation>A moving Image.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Periodical">
            <xs:annotation>
               <xs:documentation>A Serial whose issues normally are published at regular intervals.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="PrintedBook">
            <xs:annotation>
               <xs:documentation>A Book published in printed form.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Report">
            <xs:annotation>
               <xs:documentation>A lexical Creation containing statements about event(s) or state(s) in the past or present.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="ReportChapter">
            <xs:annotation>
               <xs:documentation>A Chapter of a Report.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="ReportSeries">
            <xs:annotation>
               <xs:documentation>A Series of Reports.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Restricted">
            <xs:annotation>
               <xs:documentation>A Creation identified within a restricted DOI Application Profile for which kernel metadata values are not generally available.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Season">
            <xs:annotation>
               <xs:documentation>A sub-grouping of an Audio or AudioVisual Series.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Serial">
            <xs:annotation>
               <xs:documentation>A Creation whose parts are published sequentially in time.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="SerialIssue">
            <xs:annotation>
               <xs:documentation>A collection of Articles published together in one or more fixations representing a single issue of a Serial. Typically a serial issue will be identified with a specific date of publication.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Series">
            <xs:annotation>
               <xs:documentation>A Set of related Creations published sequentially, typically under some common Name.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="ShortFilm">
            <xs:annotation>
               <xs:documentation>A complete AudioVisual Creation (that is, not a Clip or Excerpt), of no more than 40 minutes duration, that was not made for television.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Standard">
            <xs:annotation>
               <xs:documentation>A formal standard adopted by ISO or another recognized standards body.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="StandardSeries">
            <xs:annotation>
               <xs:documentation>A Series of Standards.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="StillImage">
            <xs:annotation>
               <xs:documentation>A still Image.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="SupplementalResource">
            <xs:annotation>
               <xs:documentation>A Creation which accompanies another Creation (this includes, for example, all kinds of preface or epilogue in a textual Creation, or trailers or outtakes in an Audiovisual Creation).</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Thesis">
            <xs:annotation>
               <xs:documentation>A lexical Creation written for the attainment of a degree or award from an academic institution.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="TvProgramme">
            <xs:annotation>
               <xs:documentation>An AudioVisual Creation made for, or first broadcast on, television.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="WebResource">
            <xs:annotation>
               <xs:documentation>A Creation made for, or first published on, the World Wide Web.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Website">
            <xs:annotation>
               <xs:documentation>A website.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
      </xs:restriction>
   </xs:simpleType>
   <xs:simpleType name="languageOfReferentContentType">
      <xs:annotation>
         <xs:documentation>Allowed values for the langauage of content type.</xs:documentation>
         <xs:documentation>This is an open set. Other values may be registered with the IDF by any Registration Authority.</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
         <xs:enumeration value="Original">
            <xs:annotation>
               <xs:documentation>The original language in which content is created.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Translation">
            <xs:annotation>
               <xs:documentation>A translation of a content from another form.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
      </xs:restriction>
   </xs:simpleType>
   <xs:simpleType name="mode">
      <xs:annotation>
         <xs:documentation>Allowed values for sensory modes with which a Creation is intended to be perceived.</xs:documentation>
         <xs:documentation>If the creation is an abstraction, this value may be used to refer to the mode in which manifestations of the abstraction can be expressed. For example, a musical work is abstraction that may be expressed in a performance (audio), in notational form (visual) or in braille notation (tangible).</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
         <xs:enumeration value="Audio">
            <xs:annotation>
               <xs:documentation>Of a Creation which is intended to be listened to.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Olfactory">
            <xs:annotation>
               <xs:documentation>Of a Creation which is intended to be smelled.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Restricted">
            <xs:annotation>
               <xs:documentation>A Creation identified within a restricted DOI Application Profile for which kernel metadata values are not generally available.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Tangible">
            <xs:annotation>
               <xs:documentation>Of a Creation which is intended to be touched.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Tasteable">
            <xs:annotation>
               <xs:documentation>Of a Creation which is intended to be tasted.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Visual">
            <xs:annotation>
               <xs:documentation>Of a Creation which is intended to be looked at.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
      </xs:restriction>
   </xs:simpleType>
   <xs:simpleType name="nonIsoTerritoryCode">
      <xs:annotation>
         <xs:documentation>Allowed values for Territories not included in the ISO 3166-1 list.</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
         <xs:enumeration value="ANHH">
            <xs:annotation>
               <xs:documentation>Netherlands Antilles.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="CSH">
            <xs:annotation>
               <xs:documentation>Czechoslovakia.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="CSHH">
            <xs:annotation>
               <xs:documentation>Czechoslovakia.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="DD">
            <xs:annotation>
               <xs:documentation>German Democratic Republic.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="DDDE">
            <xs:annotation>
               <xs:documentation>German Democratic Republic.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="SCG">
            <xs:annotation>
               <xs:documentation>Serbia and Montenegro.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="CSXX">
            <xs:annotation>
               <xs:documentation>Serbia and Montenegro.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="SU">
            <xs:annotation>
               <xs:documentation>USSR.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="SUHH">
            <xs:annotation>
               <xs:documentation>USSR.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="VD">
            <xs:annotation>
               <xs:documentation>Vietnam, Democratic Republic of.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="VDVN">
            <xs:annotation>
               <xs:documentation>Vietnam, Democratic Republic of.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="YD">
            <xs:annotation>
               <xs:documentation>Yemen, Democratic (South Yemen).</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="YDYE">
            <xs:annotation>
               <xs:documentation>Yemen, Democratic (South Yemen).</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="YU">
            <xs:annotation>
               <xs:documentation>Yugoslavia.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="YUCS">
            <xs:annotation>
               <xs:documentation>Yugoslavia.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="XK">
            <xs:annotation>
               <xs:documentation>Kosovo.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
      </xs:restriction>
   </xs:simpleType>
   <xs:simpleType name="partyIdentifierType">
      <xs:annotation>
         <xs:documentation>Allowed values for types of partyIdentifier.</xs:documentation>
         <xs:documentation>This is an open set. Other values may be registered with the IDF by any Registration Authority.</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
         <xs:enumeration value="DOI">
            <xs:annotation>
               <xs:documentation>A DOI Name issued under the authority of the International DOI Foundation.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="EIDRPartyID">
            <xs:annotation>
               <xs:documentation>An EIDR ID which identifies a Party.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="IPNumber">
            <xs:annotation>
               <xs:documentation>An Interested Party Number, an identifier for Parties issued under the governance of CISAC. Formerly known as the CAE (Compositeur, Auteur, Editeur) Number.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="ISNI">
            <xs:annotation>
               <xs:documentation>An International Standard Name Identifier, the ISO Standard Identifier for Parties as defined in ISO 27729.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="ORCID">
            <xs:annotation>
               <xs:documentation>An Identifier for a Party issued by the ORCID agency.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>    
         <xs:enumeration value="ProprietaryIdentifier">
            <xs:annotation>
               <xs:documentation>An Identifier from a scheme which is proprietary to a particular party.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
      </xs:restriction>
   </xs:simpleType>
   <xs:simpleType name="partyNameType">
      <xs:annotation>
         <xs:documentation>Allowed values for types of partyName.</xs:documentation>
         <xs:documentation>This is an open set. Other values may be registered with the IDF by any Registration Authority.</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
         <xs:enumeration value="AbbreviatedName">
            <xs:annotation>
               <xs:documentation>A shortened form of a Name (which may be an acronym, in whole or in part) by which a party is known. </xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="FormerName">
            <xs:annotation>
               <xs:documentation>A Name by which a party was previously known.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Name">
            <xs:annotation>
               <xs:documentation>A Name by which a party is known.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="PrincipalName">
            <xs:annotation>
               <xs:documentation>The Name by which a party is principally known.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
      </xs:restriction>
   </xs:simpleType>
   <xs:simpleType name="partyStructuralType">
      <xs:annotation>
         <xs:documentation>Allowed values for the primary type of a referent.</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
         <xs:enumeration value="Animal">
            <xs:annotation>
               <xs:documentation>A non-human animal.</xs:documentation>
               <xs:documentation>Animals may require identification for many reasons: for example, as performers ('Lassie').</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Individual">
            <xs:annotation>
               <xs:documentation>An individual human being, real or imaginary, or an imaginary Party attributed with characteristics of a human being (for example, Homer Simpson, Mickey Mouse).</xs:documentation>
               <xs:documentation>Individuals may be real, legendary or imaginary, and do not need to be biologically unique. Personas adopted for artistic or other purposes may be referenced with DOIs as unique individuals. For example, the authors 'Ellis Peters' 'John Redfern' 'Jolyon Carr' and 'Peter Benedict' may be identified as a unique parties distinct from the person 'Edith Pargeter', for whom they are all pen-name pseudonyms. 'Mickey Mouse' may be identified as an individual for the purpose of unique identification as a performer in a creation, or 'Borat' or 'Hamlet' for the identification of a character depicted in a fictional work.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Organization">
            <xs:annotation>
               <xs:documentation>A Party which is either a legal person such as a corporation or legal partnership (but not a human being); or a group of Individuals, or a group of organizations.</xs:documentation>
               <xs:documentation>Organizations include all groupings of two or more parties, as well as legally defined, non-human parties.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
      </xs:restriction>
   </xs:simpleType>
   <xs:simpleType name="partyToPartyLinkRole">
      <xs:annotation>
         <xs:documentation>Allowed values for a role which one party plays in a link to another party. Where roles have complementary pairs (for example, parent-child or member-memberOrganization) only one of these is included in this list, and this role should be associated in the linkedParty element with the appropriate party.</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
         <xs:enumeration value="CorporateSubsidiary">
            <xs:annotation>
               <xs:documentation>An Organization which is a subsidiary of another Organization.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="DivisionOrDepartment">
            <xs:annotation>
               <xs:documentation>An Organization which is a division or department of another Organization.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="MarriagePartner">
            <xs:annotation>
               <xs:documentation>An Individual who is married to another Individual.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Member">
            <xs:annotation>
               <xs:documentation>A Party which is a member of an Organization.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Parent">
            <xs:annotation>
               <xs:documentation>An Individual who is the parent of another Individual.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Sibling">
            <xs:annotation>
               <xs:documentation>An Individual who is a brother or sister of another Individual.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
      </xs:restriction>
   </xs:simpleType>
   <xs:simpleType name="placeType">
      <xs:annotation>
         <xs:documentation>Allowed values for the type of a place.</xs:documentation>
         <xs:documentation>This is an open set. Other values may be registered with the IDF by any Registration Authority. Additions are expected very soon.</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
         <xs:enumeration value="PlaceOfPublication">
            <xs:annotation>
               <xs:documentation>The place where a creation is published.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="PlaceOfCreation">
            <xs:annotation>
               <xs:documentation>The place where a creation is made.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
      </xs:restriction>
   </xs:simpleType>
   <xs:simpleType name="placeNameType">
      <xs:annotation>
         <xs:documentation>Allowed values for types of partyName.</xs:documentation>
         <xs:documentation>This is an open set. Other values may be registered with the IDF by any Registration Authority.</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
         <xs:enumeration value="AbbreviatedName">
            <xs:annotation>
               <xs:documentation>A shortened form of a Name (which may be an acronym, in whole or in part) by which a place is known. </xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="FormerName">
            <xs:annotation>
               <xs:documentation>A Name by which a place was previously known.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Name">
            <xs:annotation>
               <xs:documentation>A Name by which a place is known.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="PrincipalName">
            <xs:annotation>
               <xs:documentation>The Name by which a place is principally known.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
      </xs:restriction>
   </xs:simpleType>
   <xs:simpleType name="primaryReferentType">
      <xs:annotation>
         <xs:documentation>Allowed values for the primary type of a referent.</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
         <xs:enumeration value="Creation">
            <xs:annotation>
               <xs:documentation>A Resource made, directly or indirectly, by one or more human beings.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Party">
            <xs:annotation>
               <xs:documentation>An individual person, animal or organization capable of acting, or being perceived to act, as an agent.</xs:documentation>
               <xs:documentation>Parties may be real, legendary or imaginary, and do not need to be biologically unique. Personas adopted for artistic or other purposes may be referenced with DOIs as unique individuals. For example, the authors 'Ellis Peters' 'John Redfern' 'Jolyon Carr' and 'Peter Benedict' may be identified as a unique parties distinct from the person 'Edith Pargeter', for whom they are all pen-name pseudonyms. 'Mickey Mouse' may be identified as an individual for the purpose of unique identification as a performer in a creation, or 'Borat' or 'Hamlet' for the identification of a character depicted in a fictional work.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
      </xs:restriction>
   </xs:simpleType>
   <xs:simpleType name="returnType">
      <xs:annotation>
         <xs:documentation>Allowed values for resource types (e.g. MIME types).</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
         <xs:enumeration value="application/rdf+xml">
            <xs:annotation>
               <xs:documentation>application/rdf+xml</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="application/xml">
            <xs:annotation>
               <xs:documentation>application/xml</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="text/html">
            <xs:annotation>
               <xs:documentation>text/html</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="text/xml">
            <xs:annotation>
               <xs:documentation>text/xml</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
      </xs:restriction>
   </xs:simpleType>
   <xs:simpleType name="sequenceIdentifierType">
      <xs:annotation>
         <xs:documentation>Allowed values for types of sequenceIdentifier.</xs:documentation>
         <xs:documentation>This is an open set. Other values may be registered with the IDF by any Registration Authority.</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
         <xs:enumeration value="ChapterNumber">
            <xs:annotation>
               <xs:documentation>A SequenceIdentifier odentifying a chapter in a containing creation.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="IssueNumber">
            <xs:annotation>
               <xs:documentation>A SequenceIdentifier odentifying an issue in a containing creation.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="PageNumber">
            <xs:annotation>
               <xs:documentation>A SequenceIdentifier identifying a page in a containing creation, e.g. in a book or in a journal, on which a contained creation, e.g. a chapter or an article, starts.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="ProprietaryIdentifier">
            <xs:annotation>
               <xs:documentation>An Identifier from a scheme which is proprietary to a particular party.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="TrackNumber">
            <xs:annotation>
               <xs:documentation>A SequenceIdentifier odentifying a track in a containing creation.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="VolumeNumber">
            <xs:annotation>
               <xs:documentation>A SequenceIdentifier odentifying a volume in a containing creation.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>    
      </xs:restriction>
   </xs:simpleType>
   <xs:simpleType name="territoryCode">
      <xs:annotation>
         <xs:documentation>Allowed values for Territories not included in the ISO 3166-1 list.</xs:documentation>
      </xs:annotation>
      <xs:union memberTypes="iso3166a2:TerritoryCode doiavs:nonIsoTerritoryCode"/>
   </xs:simpleType>
   <xs:simpleType name="timeProximity">
      <xs:annotation>
         <xs:documentation>Allowed values for the proximity of a declared time to the actual time referenced. A null value indicates that the date is accurate.</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
         <xs:enumeration value="After">
            <xs:annotation>
               <xs:documentation>A time which is after the time stated.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Before">
            <xs:annotation>
               <xs:documentation>A time which is before the time stated.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="Circa">
            <xs:annotation>
               <xs:documentation>A time which is approximately accurate.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="NotAfter">
            <xs:annotation>
               <xs:documentation>A time which is the same as or before the time stated.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
         <xs:enumeration value="NotBefore">
            <xs:annotation>
               <xs:documentation>A time which is the same as or after the time stated.</xs:documentation>
            </xs:annotation>
         </xs:enumeration>
      </xs:restriction>
   </xs:simpleType>
</xs:schema>