Institution: | (1) Institute of Terrestrial Magnetism, the Ionosphere, and the Radio-Wave Propagation, Russian Academy of Sciences, Troitsk, Moscow oblast, 142092, Russia;(2) Skobeltsyn Institute of Nuclear Physics, Moscow State University, Vorob'evy gory, Moscow, 119899, Russia;(3) Moscow State Institute of Aviation, Volokolamskoe sh. 4, Moscow, 125080, Russia |