1 | Lviv Polytechnic National University, S. Bandera Str., 12, Lviv, Ukraine |
2 | Ternopil Ivan Puluj National Technical University, Ruska Str., 56, Ternopil, Ukraine |
3 | Department of Ecology and Natural Resources of the Lviv Regional State Administration, Stryjska Str., 98, Lviv, Ukraine |
4 | National Qualifications Agency of Ukraine, B. Hrinchenko Str., 1, Kyiv, Ukraine |