TY - JOUR AU - I. B. Kozhukhov TI - Semigroup rings of free left ideals JO - Algebra i logika PY - 1982 SP - 37 EP - 59 VL - 21 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AL_1982_21_1_a2/ LA - ru ID - AL_1982_21_1_a2 ER -