TY - JOUR AU - A. A. Bovdi TI - Crossed products of a semigroup and a ring JO - Doklady Akademii Nauk PY - 1961 SP - 1267 EP - 1269 VL - 137 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1961_137_6_a1/ LA - ru ID - DAN_1961_137_6_a1 ER -