V.B. Oshurko - Dr.Sc. (Phys.-Math.), Professor, Head of Department, Moscow State Technological University STANKIN. E-mail: vbo08@yandex.ru K.G. Solomakho - Post-graduate Student, Moscow State Technological University STANKIN. E-mail: kirgeosol@gmail.com V.S. Veretin - Ph.D. (Phys.-Math.), Associate Professor, Plekhanov Russian University of Economics (Moscow). E-mail: ilavvsse@mail.ru