I.S. Zimulin, S.L. Gafner

I.S. Zamulin - Ph.D. (Phys.-Math.), Senior Research Scientist, Khakas State University named after N.F. Katanova (Abakan) Е-mail: zamulin_ivan@mail.ru S.L. Gafner - Dr.Sc. (Phys.-Math.), Associate Professor, Khakas State University named after N.F. Katanova (Abakan) E-mail: sgafner@khsu.ru

I.I. Naumov1, R.R. Ibadov2, A. E. Merzlikina3

1-3 Don State Technical University (Rostov-on-Don, Russia)
1 naumov-85@yandex.ru; 2 nikulichev@list.ru; 3 leshenko_ant@mail.ru