@book {883, title = {Fundamentos de Electr{\'o}nica}, year = {2001}, pages = {184}, publisher = {Servicio de Publicaciones de la Universidad de Alcal{\'a}}, organization = {Servicio de Publicaciones de la Universidad de Alcal{\'a}}, address = {Madrid}, isbn = {84-8138-421-6}, author = {Elena L{\'o}pez Guill{\'e}n and Marta Marron and Ignacio Bravo and Maria Soledad Escudero and Alfredo Gardel and {\'A}lvaro Hern{\'a}ndez} }