TY JOUR TI Small solar flares and local polarity inversion lines of the longitudinal magnetic field of the active region KW active regions KW small solar flares KW longitudinal magnetic field structure KW polarity inversion lines (PIL) JO Solar-Terrestrial Physics AU Borovik, A.V. AU Zhdanov, A.A. PY 2022 IS 8 PB INFRA-M Academic Publishing LLC.