Presentation

The authors who publish in this journal accept the following conditions:

1. The authors retain their author rights y grant to the journal the right of first publication, with the work registered with the Creative Commons attribution that allows third parties to use the published material as long as they give appropriate credit to the author and the first publication in this journal.

2. The authors may make other independent contractual agreements for the non-exclusive distribution of the version of the article published in this journal (e.g. include it in an institutional repository or publish it in a book) as long as they clearly indicate that the work was first published in this journal.