@book{13153,
	author = {Chow, Shui-Nee and Others and Li, Chengzhi ; jt. auth.},
	title = {Normal forms and bifurcation of planar & vector fields},
	publisher = {Cambridge University Press},
	year = {1994},
	address = {Cambridge},
	note = {"Purchased under NBHM grant for the year 1994-1995"}
}