TY - JOUR AU - S. S. Litvinkov TI - Differentiability of Fourier series with respect to generalized spherical functions JO - Doklady Akademii Nauk PY - 1962 SP - 977 EP - 980 VL - 144 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1962_144_5_a8/ LA - ru ID - DAN_1962_144_5_a8 ER -