@book{6788,
	author = {Verhulst, F.},
	title = {Nonlinear differential equations and dynamical systems /},
	publisher = {Springer,},
	year = {c1996.},
	series = {Universitext},
	address = {Berlin ;},
	edition = {2nd, rev. and expanded ed.},
	note = {"With 127 figures."},
	url = {http://www.loc.gov/catdir/enhancements/fy0815/96002740-b.html}
}