A.Yu. Bodin1, O.N. Bodin2, M.N. Kramm3, R.F. Rakhmatullov4, F.K. Rakhmatullov5, N.A. Serzhantova6

1, 3 National Research University “MPEI” (Moscow, Russia)
2, 6 Penza State Technological University (Penza, Russia)
4, 5 Penza State University (Penza, Russia)
1 Bodin98@mail.ru, 2 bodin_o@inbox.ru, 3 KrammMN@mail.ru, 4 capitalofgreat@me.com, 5 fagimrakhmatullov@gmail.com, 6 itmmbspgta@yandex.r