D.L. Yeskin - Ph.D. (Phys.-Math.), Associate Professor, Волгоградская академия МВД РФ E-mail: yd38@bk.ru D.G. Kovtun - Ph.D. (Phys.-Math.), Associate Professor, Volgograd State Technical University E-mail: kdmob74@gmail.com А.G. Shein - Dr.Sc. (Phys.-Math.), Professor, Volgograd State Technical University E-mail: professor39@mail.ru S.А. Alikov - Post-graduate Student, Volgograd State Technical University E-mail: sputnik_as@mail.ru