A. O. Pelevin – Post-graduate Student, Southern Federal University; Head of Group, Federal State Unitary Enterprise “General Radio

Frequency Center”

E-mail: pelevin88@yandex.ru

V. V. Zemlyakov – Dr.Sc. (Phys.-Math.), Professor, Southern Federal University

E-mail: vvzem@yandex.ru

G. F. Zargano – Dr.Sc. (Phys.-Math.), Head of Department, Southern Federal University

E-mail: zargano@yandex.ru