TY - JOUR AU - Z. Chi AU - V. G. Safonov AU - A. N. Skiba TI - On one application of the theory of $n$-multiply $\sigma$-local formations of finite groups JO - Problemy fiziki, matematiki i tehniki PY - 2018 SP - 85 EP - 88 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/PFMT_2018_2_a12/ LA - en ID - PFMT_2018_2_a12 ER -