E. O. Andreev1, A. D. Vinogradov2, L. A. Minin3
1, 3 Voronezh State University (Voronezh, Russia)
2 N.Е. Zhukоvsky and Yu.А. Gаgаrin Air Force Academy (Vоrоnеzh, Russia)

1 wkh7yh@gmail.com, 2 mvvad@mail.ru, 3 mininla@mail.ru