1. Central Ukrainian National Technical University, Kropyvnytskyi, Kyiv, Ukraine.
2. Lviv Polytechnic National University, Lviv, Ukraine.
3. State Higher Educational Institution Khmelnitskyi National University, Khmelnytskyi, Ukraine.
4. Academy of Economics and Pedagogy, Praga, República Checa.
5. Khmelnytskyi National University, Khmelnytskyi, Ukraine.