E.A. Rakshin1, A.N. Timofeev2, A.Yu. Kolesnikov3, L.V. Podkolzina4

1–4 Peter the Great St. Petersburg Polytechnic University (St. Petersburg, Russia)

A.D. Voronkov1, S.A.K. Diane2

1,2 MIREA – Russian Technological University (Moscow, Russia)

1 a.voronkov.rtu@yandex.ru, 2 sekoudiane1990@gmail.com