M. O. Polezhaev - Post-graduate Student, VC Research Institute named after M.A. Kartseva. E-mail: 63mpolejaev@rktelecom.ru
O.S. Erkovich - Ph.D. (Phys.-Math.), Associate Professor, Bauman Moscow State Technical University
E-mail: fn@bmstu.ru
P.A. Ivliev - Post-graduate Student, Bauman Moscow State Technical University
E-mail: ivliev-pavel@mail.ru
