TY - JOUR AU - M. A. Abel TI - Scientific Conference ``Methods of Algebra and Logic'' JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1989 VL - 44 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1989_44_3_a30/ LA - ru ID - RM_1989_44_3_a30 ER -