@book{6026,
	author = {Polking, John C. and Arnold, David, },
	title = {Differential equations /},
	publisher = {Pearson Prentice Hall, },
	year = {2006},
	address = {Upper Saddle River, NJ :},
	edition = {2 ed.},
	note = {Incluye índice},
	url = {https://www.cicy.mx/sitios/sib/doctoelectronico/6430.pdf}
}