Hidalgo Huerta, Manuel2013-04-012013-04-0120001134-7627http://hdl.handle.net/10641/696spaAttribution-NonCommercial-NoDerivs 3.0 Spainhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/Pérez Modrego, Severinojournal articleopen access