2015-12-042015-12-0419951133-309X2253-8410http://hdl.handle.net/11441/31517application/pdfengAtribución-NoComercial-SinDerivadas 4.0 Españahttp://creativecommons.org/licenses/by-nc-nd/4.0/"Flow chart", an Introductioninfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess