O.E. Glukhova - Dr.Sc. (Phys.-Math.), Associated Professor, Head of the Department of Radio-Technique and Electrodynamics, Physical Faculty, Saratov State University named after N.G. Chernyshevsky. E-mail: graphene@yandex.ru V.V. Mitrofanov - Post-graduate Student, the Department of Radio-Technique and Electrodynamics, Physical Faculty, Saratov State University named after N.G. Chernyshevsky. E-mail: ip.boyar@gmail.com

 A.Yu. Cherepkov1, O.V. Druzhinina2

1,2 Bunin Yelets State University (Yelets, Russia)

2 FRС «Computer Science and Control» of Russian Academy of Sciences (Moscow, Russia)

1cherepkov.andrey@mail.ru; 2ovdruzh@mail.ru