Nguyen Ha Nam1, A.A. Sochava2, K.V. Greshnevikov3, S.V. Bogachev4, A.S. Cherepanov5, D.V. Dikiy6

1-6 Peter the Great St. Petersburg Polytechnic University (St. Petersburg, Russia)

1 nguyenhanama1@gmail.com; 2 sochava@spbstu.ru; 3 greshnev_kv@spbstu.ru; 4 bogachev_sv@spbstu.ru; 5 cherepanov@spbstu.ru; 6 dikij_dv@spbstu.ru