Foreword

License

Copyright (c) 2021 Leandro Marques Guilheiro

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

The authors who publish in this journal must agree to the following terms:

1. The authors grant on a nonexclusive basis the exploitation rights (reproduction, distribution, public communication and transformation) of the work accepted for publication to the University of León. The authors can establish, on their own, additional agreements for the non-exclusive distribution of the version of the work published in the journal (for example, placing it in an institutional repository or publishing it in a book), always acknowledging the initial publication in this journal.
2. This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. Click to see basic information and the legal text of the license.
3. The authors are allowed and encouraged to disseminate electronically pre-print or post-print versions of their work before publication, as this can give rise to productive exchanges, as well as earlier and increased citing of the works published.