A. L. Ganyushkin, E. A. Bolvachev, V. A. Ignatyuk

А. L. Ganushkin - Research Associate, Vladivostok State University of Economics and Service
V. А. Ignatyuk - Dr.Sc. (Phys.-Math.), Professor, Vladivostok State University of Economics and Service. E-mail: viktor.ignatyuk@vvsu.ru