1. Borys Grinchenko Kyiv University, Kyiv, Ukraine.
2. V. O. Sukhomlinskyi National University of Mykolaiv, Mykolaiv, Ukraine.
3. "Donbas State Pedagogical University", Dnipro, Ukraine.
4. Lviv Polytechnic National University, Lviv, Ukraine.
5. Zhytomyr Ivan Franko State University, Zhytomyr, Ukraine.