Fernández García, Antonio2011-02-222011-02-221884http://hdl.handle.net/10334/832Pags. 21-40.spaAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttps://creativecommons.org/licenses/by-nc-nd/4.0/Socios de la Sociedad Colombinainfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess