00727naa#a2200205#i#450# EN\\bibl\33523 20260312071807.4 2712-9640 20200922b2020####ek#y0engy0150####ca RUS RU Ultra low frequency emissions ranging from 0.1 to 3 Hz in circumpolar areas Journal article Irkutsk Institute of Solar-Terrestrial Physics SB RAS 2020 7 с. Journal article local Геология. Геологические и геофизические науки. 55 RUS Potapov Alexander Sergeevich Guglielmi Anatol Vladimirovich Dovbnya Boris Viktorovich ras.editorum.ru