TY - JOUR AU - A. B. Shabat TI - The removability of level sets for solutions to elliptic equations JO - Doklady Akademii Nauk PY - 1965 SP - 1032 EP - 1035 VL - 160 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1965_160_5_a15/ LA - ru ID - DAN_1965_160_5_a15 ER -