@book{5218,
	author = {Edwards, C. Henry;  and Hidalgo y Mondragón, María del Consuelo; },
	title = {Ecuaciones diferenciales elementales y problemas con condiciones en la frontera /},
	publisher = {Pearson,},
	year = {1994.},
	address = {México :},
	edition = {3a ed.}
}