Cortés Díaz, José María2015-07-152015-07-151978-020026-0991http://hdl.handle.net/11441/26909application/pdfspaAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/Materialesinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess