N.V. Astakhov1, I.S. Bobylkin2, O.N. Chirkov3, E.M. Ivashkina4, R.M. Lyapunov5

1-5 FSBEI of HE “Voronezh State Technical University” (Voronezh, Russia)

1 kokakoller@gmail.com; 2 bobylkin@bk.ru; 3 chir_oleg@mail.ru;
4 katya.ivashk-ina@yandex.ru; 5 roman112k@mail.ru