@book{20680,
	author = {Cernuschi, Félix. and Codina, Sayd.},
	title = {Panorama de la astronomía moderna},
	publisher = {Unión Panamericana,},
	year = {1968},
	series = {Serie de física. Monografía},
	address = {Washington :},
	edition = {2 ed.}
}