TY - JOUR AU - A. A. Gonchar TI - Approximation of continuous functions by harmonic functions JO - Doklady Akademii Nauk PY - 1964 SP - 503 EP - 506 VL - 154 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1964_154_3_a3/ LA - ru ID - DAN_1964_154_3_a3 ER -