Editorial Main Article Content John Calle-Siguencia INGENIUS - EDITOR IN CHIEF http://orcid.org/0000-0002-2148-3297 Keywords Abstract 247 | PDF (Español (España)) Downloads 186 PDF Downloads 71 Article Sidebar PDF (Español (España)) PDF Published Jul 1, 2019 Article Details Issue No. 22 (2019): july-december Section Editorial