@book{29576,
	author = {Vallejo Villalta, Ismael. and Márquez Pérez, Joaquín. and e-libro, Corp.},
	title = {SIGCOMSE},
	publisher = {Asociación de Geógrafos Españoles,},
	year = {2006.},
	address = {Madrid :},
	url = {https://elibro.net/ereader/politecnicointernacional/21520}
}