@book{20981,
	author = {Lomen, David and Lovelock, David},
	title = {Differential equations :},
	publisher = {John Wiley & Sons,},
	year = {c1999},
	address = {New York :},
	note = {Includes index},
	url = {http://www.loc.gov/catdir/description/wiley033/98014494.html}
}