B.A. Strukov - Dr. Sc. (Phys.-Math.), Professor, Lomonosov Moscow State University. Е-mail: bstrukov@mail.ru
I.V. Shnaidshtein -Ph.D. (Phys.-Math.), Associate Professor, Lomonosov Moscow State University. Е-mail: shnaidshtein@mail.ru
E.N. Khazanov - Dr. Sc. (Phys.-Math.), Professor, Leading Research Scientist, Kotel\'nikov IRE of RAS (Moscow). E-mail: khazanov@cplire.ru
A.V. Taranov - Ph. D. (Phys.-Math.), Senior Research Scientist, Kotel\'nikov IRE of RAS (Moscow). E-mail: taranov@cplire.ru
E.N. Khazanov - Dr. Sc. (Phys.-Math.), Professor, Leading Research Scientist, Kotel\'nikov IRE of RAS (Moscow). E-mail: khazanov@cplire.ru
A.V. Taranov - Ph. D. (Phys.-Math.), Senior Research Scientist, Kotel\'nikov IRE of RAS (Moscow). E-mail: taranov@cplire.ru