1. Voronezh State Technical University, Voronezh, Russia;
2. Voronezh Institute of the RF Ministry of Internal Affairs, Voronezh, Russia;
3. Kursk State University, Kursk, Russia;
4. Kazan E. K. Zavoisky Physical-Technical Institute, Kazan, Russia;
5. Institute of Physics, Kazan Federal Univversity, Kazan, Russia