Affiliation: | 1.Moscow State University, Faculty of Physics, 119234, Moscow, Russia ;2.Space Research Institute, Russian Academy of Sciences, 117997, Moscow, Russia ;3.Pushkov Institute of Terrestrial Magnetism, Ionosphere, and Radio Wave Propagation, 108840, Troitsk, Russia ;4.Moscow Center of Fundamental and Applied Mathematics, 119234, Moscow, Russia ; |