M. V. Davidovich – Dr.Sc. (Phys.-Math.), Professor, Department of Radiotechnique and Electrodynamics, Saratov State University n.a. N.G. Chernyshevsky

E-mail: davidovichmv@info.sgu.ru

V. P. Meschanov – Dr.Sc. (Eng.), Professor, Director of “NIKA-Microwave”, Ltd. (Saratov) E-mail: nika373@bk.ru