@book{28797,
	author = {Chow, S.-N. and Hale, J. K.},
	title = {Methods of bifurcation theory /},
	publisher = {Springer,},
	year = {1982.},
	series = {Grundlehren der mathematischen wissenschaften) (V. 251.},
	address = {[S.l.] :}
}