@book{56159,
	author = {Shilov, Georgi Evgn'evich.},
	title = {Cómo construir gráficas},
	publisher = {Limusa,},
	year = {1973},
	series = {Temas matemáticos},
	address = {México, D.F. :},
	note = {c.4-20 en bodega}
}