@book{218931,
	author = {Laughlin, Robert B. and Jawerbaum , Silvia .},
	title = {Un universo diferente},
	publisher = {Katz},
	year = {c2007.},
	series = {Conocimiento},
	address = {Buenos Aires},
	edition = {1a.ed.},
	note = {Translation of :A different universe , c 2005.}
}