@book{173132,
	author = {Zill, Dennis G. and González, Virgilio, tr.},
	title = {Ecuaciones diferenciales con aplicaciones de modelado  /},
	publisher = { Thomson Learning,},
	year = {2002},
	address = {México  :},
	edition = {7a ed.},
	note = {Título original: First course in differential equations with modeling applications}
}