D.N. Sokolov - Postgraduate student of department of the theoretical physics, Tver State University. E-mail: dnsokolov@mail.ru
N.Yu. Sdobnyakov - Associate professor of department of the theoretical physics, Tver State University. E-mail: nsdobnyakov@mail.ru
A.Yu. Kolosov - Postgraduate student of department of the theoretical physics, Tver State University. E-mail: kolosov-au@yandex.ru
N.V. Novozhilov - Postgraduate student of department of the theoretical physics, Tver State University. E-mail: nnowhereman@gmail.com
A.S. Antonov - Postgraduate student of department of the theoretical physics, Tver State University. E-mail: s014451@mail.ru
Ya.V. Turkin - Post-graduate Student, Yuri Gagarin State Technical University of Saratov. E-mail: turkin.yaroslav@gmail.com
A.A. Zaharov - Dr. Sc. (Eng.), Professor, Head of Department «Electronic devises and equipment», Yuri Gagarin State Technical University of Saratov. E-mail: zaharov@sstu.ru
A.A. Shvachko - Post-graduate Student, Yuri Gagarin State Technical University of Saratov. E-mail: alexandr1899@gmail.com