TY - JOUR AU - M. V. Volkov TI - The finite basis question for varieties of semigroups JO - Matematičeskie zametki PY - 1989 SP - 12 EP - 23 VL - 45 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1989_45_3_a1/ LA - ru ID - MZM_1989_45_3_a1 ER -