00838naa#a2200205#i#450# EN\INFRA-M\bibl\41320 20240919031752.4 2500-0535 20201222b2020####ek#y0engy0150####ca RUS RU Asymmetry in occurrence of the leading and following polarities in the photospheric magnetic field at the early stage of active region formation Journal article Moscow INFRA-M Academic Publishing LLC. 2020 6 с. Journal article local Астрономия. Астрофизика. Исследование космического пространства. Геодезия. 52 RUS Grigoryev Victor Mikhailovich Ermakova Lyudmila Victorovna Khlystova Anna Innokentyevna zh-szf.ru