Affiliation: | 1.Kazan State Technological University, ul. K. Marksa, 68, Kazan, Tatarstan Republic, 420015, Russia ;2.Kazan State University, Kazan, Tatarstan Republic, 420008, Russia ;3.Kazan State Power Engineering University, ul. Krasnosel’skaya, 51, Kazan, Tatarstan Republic, 420066, Russia ; |