@book{85794,
	author = {Casas, Alberto,},
	title = {El lado oscuro del universo /},
	publisher = {CSIC :},
	year = {[2010]},
	series = {¿Qué sabemos de? ;},
	address = {Madrid :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/81051/}
}