TY - JOUR AU - M. M. Glukhov TI - On free expansions and algorithmic problems in $R$-varieties of universal algebras JO - Sbornik. Mathematics PY - 1971 SP - 297 EP - 328 VL - 14 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_1971_14_3_a0/ LA - en ID - SM_1971_14_3_a0 ER -