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a. Authors retain the copyright and grant the journal the right to first publication, with the paper simultaneously licensed under the Creative Commons Attribution license that allows the sharing of the paper with acknowledgment of authorship and initial publication in this journal.

b. Authors are authorized to assume additional contracts separately, for non-exclusive distribution of the version of the paper published in this journal (for example publishing in institutional repository or as a book chapter), with acknowledgment of authorship and initial publication in this journal.

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