A.A. Maltsev1, I.A. Maltsev2, Z.R. ldiatullov3

1,3 Kazan National Research Technical University named after. A.N. Tupolev (Kazan, Russia)

2 Inkomsystem (Kazan, Russia)

1 malcev_@mail.ru; 2 stronghold1655@yandex.ru; 3 zridiatullov@prof.kai.ru