Abstract
The article is an opening message from the journal's editors summarizing the key aspects of the issue.
This work is licensed under a Creative Commons Attribution 4.0 International License.
The article is an opening message from the journal's editors summarizing the key aspects of the issue.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Astrakhan State University. Astrakhan, Russia. Email: Pavel_karabushenko[at]mail.ru
Astrakhan State University. Astrakhan, Russia. Email: leonid.podv[at]gmail.com