@book{30254,
	author = {Zill, Dennis G.},
	title = {Ecuaciones diferenciales con aplicaciones de modelado /},
	publisher = {Cengage Learning,},
	year = {2009.},
	address = {México :},
	edition = {9a ed.},
	note = {Versión original en inglés: A first course in differential equations with modeling applications.}
}