ISSN 2308-8559 e-ISSN 2415-8224
en

Author

Serhii Ziemtsov

Postgraduate Student

“KROK” University

03113, 30-32 Tabirna Str., Kyiv, Ukraine

https://orcid.org/0000-0002-2253-501X

s-ziemtsov9@outlook.com

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