ISSN 2307-9878 (Print)
ISSN 2518-1181 (Online)
DOI 10.33146/2307-9878

Valentyn Oleksiyko

Affiliation: Full Name of Institution / Organization, Town, Country*:
Podillia State University, Kamianets-Podilskyi, Ukraine

Oleksiyko V.S.

Published papers