TY - JOUR AU - I. N. Safonova TI - On one question of A.~N.~Skiba in the theory of $\sigma$-properties of finite groups JO - Problemy fiziki, matematiki i tehniki PY - 2022 SP - 78 EP - 83 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/PFMT_2022_1_a11/ LA - ru ID - PFMT_2022_1_a11 ER -