1. Department of Information Technologies; Don State Technical University; Gagarin sqr.1 Rostov-on-Don 344000 Russia
2. Department of Strength of Materials; Don State Technical University; Gagarin sqr.1 Rostov-on-Don 344000 Russia
3. Department of Mathematics, Mechanics and Computer Sciences; Southern Federal University; Milchakov str. 8а Rostov-on-Don 344090 Russia
4. Department of Mechanics of Active Materials; Southern Scientific Center of Russian Academy of Sciences; Chehov str. Rostov-on-Don 344006 Russia