1. Bogdan Khmelnytsky Melitopol State Pedagogical University, Zaporizhzhia, Ukraine.
2. National University of Water and Environmental Engineering, Rivne, Ukraine.
3. Hryhorii Skovoroda University in Pereiaslav, Pereiaslav, Ukraine.
4. National University of Kyiv Mohyla Academy, Kyiv, Ukraine.