@book{235381,
	author = {Burbano de Ercilla, Santiago, and Burbano García, Enrique,},
	title = {Problemas de física /},
	publisher = {Editorial Tébar,},
	year = {2004.},
	address = {Madrid :},
	edition = {Vigésima séptima edición.},
	url = {https://www.digitaliapublishing.com/a/17470/}
}