TY - JOUR AU - E. V. Kashincev TI - On the word problem for special semigroups JO - Izvestiya. Mathematics PY - 1979 SP - 663 EP - 676 VL - 13 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM2_1979_13_3_a5/ LA - en ID - IM2_1979_13_3_a5 ER -