Copyrights are ensured under the CC BY-SA 4.0 license in Creative Commons database. Within the framework of the current legislation, a reader is free to read, download, copy, distribute, print, research and use the full text of the article without registration and prior permission from the publisher and/or author.
The author retains copyright for the paper and grants the journal the opportunity for initial publication. The article is also licensed under a Creative Commons Attribution-ShareAlike 4.0 International License. The license permits further use, with attribution to the author and original publisher.
Authors are allowed to reproduce their own papers, but they are required to credit the journal as the source of the original publication.