A.P. Trifonov  – Honored Scientist of RF, Dr. Sc. (Eng.), Professor, Head of Department of Radiophysics, Voronezh State University

E-mail: trifonov@phys.vsu.ru

E.V. Litvinov – Ph. D. (Phys.-Math.), Assistant, Department of Radiophysics, Voronezh State University

Yu.E. Korchagin – Dr. Sc. (Phys.-Math.), Professor, Department of Radiophysics, Voronezh State University E-mail: korchagin@phys.vsu.ru