@book{87861,
	author = {Saucedo Salas, David Esteban.},
	title = {Gráfica e intersección de funciones},
	publisher = {El autor,},
	year = {2003},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/99378.pdf}
}