Nudos, Nodos y2013-07-012619-60690122-4328http://hdl.handle.net/20.500.12209/5105Diredtorioapplication/pdfspahttps://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Artículo de revistaAttribution-NonCommercial 4.0 International