A. G. Kramin, V. A. Rusakov, A. A. Hramov
A.A. Khlyunev- Leading Enginer, LLC «Vzor», Nizhny Novgorod E-mail: khlunev_andrey@mail.ru
V.P. Khranilov- Dr.Sc. (Eng.), Associate Professor, Nizhny Novgorod State Technical University n.a. R. E. Alekseev E-mail: hranilov@nntu.nnov.ru