TY - JOUR AU - Yu. L. Ershov TI - Decidability of certain non-elementary theories JO - Algebra i logika PY - 1964 SP - 45 EP - 47 VL - 3 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AL_1964_3_2_a3/ LA - ru ID - AL_1964_3_2_a3 ER -