@book{87193,
	author = {Pickover, Clifford A. and Ley, Richard,},
	title = {Las matemáticas de Oz /},
	publisher = {RBA,},
	year = {[2007]},
	series = {Biblioteca desafíos matemáticos},
	address = {[Barcelona] :},
	note = {Traducido de:  The mathematics of Oz, mental gymnastics from beyond the edge.}
}