TY - JOUR AU - Yu. L. Ershov TI - Undecidability of regularly closed fields JO - Algebra i logika PY - 1981 SP - 389 EP - 394 VL - 20 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AL_1981_20_4_a1/ LA - ru ID - AL_1981_20_4_a1 ER -