Pérez Pérez, Manuel2020-07-172020-07-171988-01-20https://hdl.handle.net/11441/99620application/pdf530 p.spaAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/openAccess