S.V. Frolov1, A.A. Korobov2, K.S. Savinova3, A.Yu. Potlov4, T.A. Frolova5

1–5 Tambov State Technical University (Tambov, Russia)
1 sergej.frolov@gmail.com, 2 korobov1991@mail.ru, 3 savinova.k94@mail.ru, 4 zerner@yandex.ru, 5 frolova2000@gmail.com