V.V. Zaitsev - Ph.D. (Phis.-Math.), professor of the department of radiophysics, Samara State University. E-mail: zaitsev@samsu.ru
A.V. Karlov (jr.) - Ph.D. (Phis.-Math.), senior Research scientist, JSC «Concern «Automation». E-mail: KarlovAV@oao-avtomatika.ru