TY - JOUR AU - G. A. Kalyabin TI - On the moduli of smoothness of functions given on a sphere JO - Doklady Akademii Nauk PY - 1987 SP - 1051 EP - 1054 VL - 294 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1987_294_5_a5/ LA - ru ID - DAN_1987_294_5_a5 ER -