Dear readers, authors and reviewers:

Due to the fact that the new OJS system in which our journal is published has recently been updated and that the training course we were going to attend for the edition of the next issue has been cancelled, we inform you that the next issue will be delayed.

The editors of this journal are working to publish the issue 19 (1) as soon as possible.

Thank you very much for your understanding.

Best regards.

The Editorial Team