@book{84504,
	author = {Britton, Jack R. and Bello, Ignacio.},
	title = {Matemáticas contemporáneas},
	publisher = {Oxford University Press,},
	year = {1982.},
	address = {México, D.F. :},
	edition = {2 ed.},
	note = {Trad. de : Topics in contemporary mathematics, 1975}
}