1. Electronics and Computer Technologies Department, Ivan Franko National University of Lviv, Lviv, Ukraine
2. Chemistry Department, Ivan Franko National University of Lviv, Lviv, Ukraine
3. Institute of Materials Engineering, Kazimierz Wielki University, Bydgoszcz, Poland
4. General Technical Subjects Department, Stepan Gzhytsky Lviv National University of Veterinary Medicine and Biotechnologies, Lviv, Ukraine