Affiliation: | 1.Department of Control Theory, Nizhny Novgorod State University, Gagarin Av. 23, Nizhny Novgorod, Russia, 603950 ;2.Scientific and Educational Mathematical Center “Mathematics of Future Technologies”, Nizhny Novgorod State University, Gagarin Av. 23, Nizhny Novgorod, Russia, 603950 ;3.Institute of Applied Physics, Russian Academy of Sciences, Ul’yanova Str. 46, Nizhny Novgorod, Russia, 603950 ; |