M. V. Davidovich - Dr.Sc. (Phys.-Math.), Professor, Department of Radiotechnology and Electrodynamics, Saratov State University. E-mail: DavidovichMV@info.sgu.ru
N. A. Bushuev - Ph.D. (Phys.-Math.), General Director of SPE "Almaz". E-mail: nabush2009@yandex.ru