R.V. Budaragin1, M.I. Kurzenkov2, A.A. Radionov3, Z.Yu. Salasenko4

1-4 Nizhny Novgorod State Technical University named after R.E. Alekseev (Nizhny Novgorod, Russia)

1 rbudaragin@mail.ru; 2 cheetah10@mail.ru; 3 radionow.aleck@yandex.ru; 4 zina.salasenko@mail.ru