TY - JOUR AU - V. S. Guba TI - Equivalence of infinite systems of equations in free groups and semigroups to finite subsystems JO - Matematičeskie zametki PY - 1986 SP - 321 EP - 324 VL - 40 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1986_40_3_a2/ LA - ru ID - MZM_1986_40_3_a2 ER -