1. West Ukrainian National University,Department of Applied Mathematics,Ternopil,UKRAINE
2. West Ukrainian National University,Criminal Law and Process Department,Ternopil,UKRAINE
3. Kherson State Maritime Academy,International Affairs Department,Kherson,UKRAINE
4. Ternopil Volodymyr Hnatiuk National Pedagogical University,Department of Physics and Mathematics,Ternopil,UKRAINE