Some corrections for "properties of formal grammars with mixed types of rules and their linguistic relevance"

In this paper, we will study a class of formal grammars with mixed types of rules. The reason for considering such grammars is that no single style (i.e., formal character of rules) of formal grammars is able to represent the various aspects of language ...

In this paper, it is shown that the addition of simple and linguistically motivated forms of lexical rules to grammatical theories based on subcategorization lists, such as categorial grammars (CG) or head-driven phrase structure grammars (HPSG), ...

Pregroup grammars are a context-free grammar formalism which may be used to describe the syntax of natural languages. However, this formalism is not able to naturally define types corresponding to optional and iterated arguments such as optional ...