G.R. Sagatelyan1, K.N. Bugorkov2, A.B. Solomashenko3, A.S. Kuznetsov4

1–4 Bauman Moscow State Technical University (National Research University) (Moscow, Russia)
 

N.V. Cherkesova1, G.A. Mustafaev2, A.G. Mustafaev3

1,2 Kabardino-Balkarian State University, (Nalchik, Russia)
3 Dagestan State University of National Economy (Makhachkala, Russia)
1 natasha07_2002@mail.ru, 2 zoone@mail.ru, 3 arslan_mustafaev@mail.ru