D.V. Ivanov1, V.A. Ivanov2, M.I. Ryabova3, R.R. Belgibaev4, V.V. Ovchinnikov5, A.V. Chernyadyev6
1-6 Volga State University of Technology (Yoshkar-Ola, Russia)
1 IvanovDV@volgatech.net; 2 IvanovVA@volgatech.net; 3 RyabovaMI@volgatech.net; 5 OvchinnikovVV@volgatech.net