@book{30073,
	author = {Borrelli, Robert L. and Coleman, Courtney S.},
	title = {Differential equations :},
	publisher = {Wiley,},
	year = {2004.},
	address = {[S.l.] :},
	edition = {2nd ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0471433322/chopaconline-20}
}