TY - JOUR AU - T. Nordahl TI - Finitely generated left commutative semigroups are residually finite. JO - Semigroup forum PY - 1984 SP - 347 EP - 354 VL - 28 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SF_1984__28_134661/ ID - SF_1984__28_134661 ER -