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The requirements that must be met by the author are as follows:

1. The author saves the copyright and gives the journal simultaneously with the license  under Creative Commons Attribution 4.0 Internasional License which permits other people to share the work by stating that it is firstly published in this journal.
2. The author can post their work in an institutional repository or publish it in a book by by stating that it is firstly published in this journal.
3. The author is allowed to post their work online (for instance, in an institutional repository or their own website) before and during the process of delivery. (seeOpen Access Effect).