Authors
Vladyslav Kolomechiuk
kolomechiuk.vladyslav@eenu.edu.ua
Lesya Ukrainka Eastern European National University, Ukraine
kolomechiuk.vladyslav@eenu.edu.ua
© 2019 Vladyslav Kolomechiuk, published by John Paul II University of Applied Sciences
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.