TY - JOUR AU - L. A. Shemetkov TI - Two directions in the development of the theory of non-simple finite groups JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1975 SP - 185 EP - 206 VL - 30 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1975_30_2_a3/ LA - en ID - RM_1975_30_2_a3 ER -