@book{5025,
	author = {Northrop, Eugene P. and Ortíz Vázquez, Ricardo,},
	title = {Paradojas matemáticas /},
	publisher = {Unión Tipográfica Editorial Hispano Americana,},
	year = {c1981},
	series = {Manuales Uteha ;},
	address = {México :},
	edition = {1a ed.},
	note = {Traducción de : Riddles in mathematics}
}