@book{250630,
	author = {Jordan, D. W. and Smith, Peter, and ebrary, Inc.},
	title = {Nonlinear ordinary differential equations},
	publisher = {Oxford University Press,},
	year = {2007.},
	address = {Oxford :},
	url = {http://www.columbia.edu/cgi-bin/cul/resolve?clio9173394}
}