00797naa#a2200205#i#450# EN\\bibl\39466 20260312142143.4 2500-0535 20200922b2020####ek#y0engy0150####ca ENG RU Features of excitation and azimuthal and meridional propagation of long-period Pi3 oscillations of the geomagnetic field on December 8, 2017 Journal article Irkutsk Institute of Solar-Terrestrial Physics SB RAS 2020 13 с. Journal article local Геология. Геологические и геофизические науки. 55 ENG Moiseev Aleksey Vladimirovich Starodubtsev Sergei Anatolyevich Mishin Vladimir Vilenovich ras.editorum.ru