TY - JOUR AU - B. M. Shain TI - A system of axioms for semigroups comprisable by generalized groups JO - Doklady Akademii Nauk PY - 1960 SP - 1030 EP - 1033 VL - 134 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1960_134_5_a8/ LA - ru ID - DAN_1960_134_5_a8 ER -