V.V Goncharov - Dr.Sc. (Eng.), Professor, Head of Mathematical Department, Peter the Great Strategic Rocket Forces Academy (Moscow). E-mail: v_v_goncharov@mail.ru O.V. Mishenina - Ph.D. (Ped.), Professor, Department of Mathematics, Peter the Great Strategic Rocket Forces Academy (Moscow). E-mail: o.v.misyenina@gmail.com