TopologyVolume 3, Issue 3, May 1965, Pages 291-304Classification problems in differential topology —III: Applications to special casesAuthor links open overlay panelC.T.C. WallShow moreShareCitehttps://doi.org/10.1016/0040-9383(65)90059-5Get rights and contentUnder an Elsevier user licenseopen archivePrevious article in issueNext article in issueRecommended articlesCited by (0)Copyright © 1965 Published by Elsevier Ltd.