Copyright Notice

1. The authors retain the journal's copyright and grant the right to its first publication. The work is also distributed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0), which allows others to share the work with an acknowledgement of the authorship and its initial publication in this journal.

2. With an acknowledgment of its initial publication in this journal, authors are free to enter into additional, separate contractual arrangements for the non-exclusive distribution of the work published in the journal (e.g., posting it to an institutional repository or publishing it in a book).

3. Prior to and during the submission process, authors are allowed and encouraged to post their work online (e.g., on their website or in institutional repositories). This can result in fruitful exchanges and in earlier and more frequent citations of published work.