D.V. Asotov - graduate student of the Department Radio Engineering, Voronezh State Technical University. E-mail: pifagor1905@mail.ru
Y.E. Kalinin - Dr.Sci. (Phys.-Math), Professor, head of the department of physics of solid state
B.V. Matveev - Ph.D. (Eng.), Head of the Department Radio Engineering, Voronezh State Technical University. E-mail: matveevzavkaf@mail.ru
V.B. Avdeev - Dr.Sci. (Eng.), Professor, Voronezh State Technical University