Yu.S. Belov - Ph. D. (Phys.-Math.), Associate Professor, Kaluga branch of the Bauman MSTU. E-mail: ybs82@mail.ru S.A. Ginzgeimer - Ph. D. (Phys.-Math.), Associate Professor, Kaluga branch of the Bauman MSTU. E-mail: gingzgeymer@mail.ru B.M. Loginov - Dr. Sc. (Phys.-Math.), Professor, Kaluga branch of the Bauman MSTU. E-mail: bloginov@mail.ru S.V. Rybkin - Ph. D. (Phys.-Math.), Associate Professor, Kaluga branch of the Bauman MSTU. E-mail: sr@kaluga.net