@book{81350,
	author = {Biro, Susana,},
	title = {Para calcular el universo :},
	publisher = {Fondo de Cultura Económica,},
	year = {2010.},
	series = {La ciencia para todos ;},
	address = {México, D. F. :},
	edition = {Primera edición electrónica.},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/64921/}
}