TY - JOUR AU - S. M. Nikol'skii TI - Approximation on a manifold by traces of functions of exponential JO - Doklady Akademii Nauk PY - 1990 SP - 786 EP - 789 VL - 314 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1990_314_4_a3/ LA - ru ID - DAN_1990_314_4_a3 ER -