Ya.I. Chizhevskaya − Student, 

Moscow Institute of Physics and Technology (State University)

E-mail: yana.chizhevskaya@phystech.edu

S.P. Skobelev − Dr.Sc. (Phys.-Math.), Leading Research Scientist, 

PJSC «Radiofizika»; 

Associate Professor, 

Moscow Institute of Physics and Technology (State University) E-mail: s.p.skobelev@mail.ru