Editorial Note

License

Copyright:

The author retains the rights of authorship and grants the journal the right of first publication.

The articles will be published under a license of Creative Commons Attribution-NonCommercial-NoDerivs 4.0 Attribution-NonCommercial-NoDerivs 4.0 International which will appear in each of them.

The licence allows the work to be shared with third parties, provided that they acknowledge authorship, initial publication in this journal and the terms of the licence. No commercial use or derivative works may be created without the permission of the copyright holder.

In the case that the article has already been published, the original rights will be respected and they will be mentioned in a footnote.