V.B. Malinkin, S.S. Abramov, Ye.V. Kulyasov, Ye.V. Malinkin

S.S. Borodenko - Post-graduate Student, Southern Federal University
G.F. Zargano - Ph.D. (Phys.-Math.), Professor, Head of Department, Southern Federal University
V.V. Zemlyakov - Ph.D. (Phys.-Math.), Associate Professor, Southern Federal University