@book{76,
	author = {AYRES, FRANK.},
	title = {TEORIA Y PROBLEMAS DE ECUACIONES  DIFERENCIALES/ },
	publisher = {MCGRAW-HILL},
	year = {1969},
	series = {SER. DE COMPENDIOS SCHAUM},
	address = {MEXICO: },
	note = {INCLUYE INDICE.}
}