@book{247570,
	author = {Hacyan, Shahen,},
	title = {Relatividad para principiantes /},
	publisher = {Fondo de Cultura Económica,},
	year = {2011.},
	series = {La ciencia para todos ;},
	address = {México, D.F. :},
	edition = {Primera edición electrónica.},
	url = {https://www.digitaliapublishing.com/a/42949/}
}