ISSN 2542-1956 (online)

ISSN 1994-2540 (print)

Shamionov А. R.

Shamionov

А.

R.

Country:

City:

Company:

Saratov State University

410028, Russia, Saratov, Astrakhanskaya str., 83

E-mail:

artur-shamionov@mail.ru

Author's articles