TY JOUR TI Conditions for arrival of solar energetic protons in Earth after strong solar flares KW solar flares KW solar proton events KW ground level enhancements JO Solar-Terrestrial Physics AU Kichigin, G.N. AU Kravtsova, M.V. AU Sdobnov, V.E. PY 2022 IS 8 PB INFRA-M Academic Publishing LLC.