%0 Journal Article %T Features of excitation and azimuthal and meridional propagation of long-period Pi3 oscillations of the geomagnetic field on December 8, 2017 %A Moiseev, A.V. %A Starodubtsev, S.A. %A Mishin, V.V. %K Pi3 pulsations, steady magnetospheric convection, convection electrojets, particle injections, azimuthal and meridional propagation, wave disturbances in the interplanetary medium %J Solar-Terrestrial Physics %D 2020 %N 6 %P 13 %I INFRA-M Academic Publishing LLC.