Golubitsky, Martin Singularities and groups in bifurcation theory/ Martin Golubitsky and David G. Schaeffer - New York: Springer, 1985. - 2 v. : ill. ; 25 cm. - (Applied mathematical sciences), v. 51 . ISBN: 9780387909998 Subjects--Topical Terms: Bifurcation theoryGroup theory Dewey Class. No.: 515.353 / GOL/