TY - JOUR AU - P. I. Lizorkin AU - S. M. Nikol'skii TI - Approximation on a sphere in the metric of the continuous functions JO - Doklady Akademii Nauk PY - 1983 SP - 524 EP - 528 VL - 272 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1983_272_3_a1/ LA - ru ID - DAN_1983_272_3_a1 ER -