E.P. Vinogradova1, D.F. Vinogradov2, A.V. Zhmurin3, O.I. Sauta4

1–4 Saint Petersburg State University of Aerospace Instrumentation (St. Petersburg, Russia)

1 kate_v@rambler.ru, 2 vinmitya@gmail.com, 3 qqwwww2006@gmail.com, 4 sauta-oleg@yandex.ru