@book{231668,
	author = {Universidad Rey Juan Carlos. and Matellán Olivera, Vicente,},
	title = {Sobre software libre :},
	publisher = {Universidad Rey Juan Carlos, Servicio de Publicaciones :},
	year = {[2004]},
	series = {Ciencias experimentales y tecnología},
	address = {Madrid :},
	url = {https://www.digitaliapublishing.com/a/6606/}
}