Affiliation: | 1. Institute of Terrestrial Magnetism, Ionosphere and Radiowave Propagation, U.S.S.R. Academy of Sciences, Troitsk, Moscow Region, 142092, U.S.S.R.;2. Department of Physics, Kiev State University, Kiev 252022, U.S.S.R.;1. Nyzhny Novgorod State Technical University, 603950, Nyzhny Novgorod, Russia;2. HSE University, 603155, Nizhny Novgorod, Russia;3. Institute of Applied Physics RAS, 603155, Nizhny Novgorod, Russia |