BibTeX
@BOOK{
         Hirsch1976DT,
       AUTHOR = "Morris Hirsch",
       TITLE = "Differential Topology",
       PUBLISHER = "Springer-Verlag",
       ADDRESS = "New York",
       YEAR = "1976",
       REFERRED = "[Guckenheimer1996BAD].",
       ISBN = "0387901485"
}