V.A. Nicolaev, A.S. Smirnov, V.A. Yatskevich

P.O. Afanasiev - Post-graduate Student, Southern Federal University
V.F. Sledkov - Ph.D. (Phys.-Math.), Leading Research Scientist Southern Federal University
M.B. Manuilov - D.Sc. (Phys.-Math.), Professor, Southern Federal University