TY - JOUR AU - N. K. Nikol'skii TI - Selected problems of weighted approximation and spectral analysis JO - Informatics and Automation PY - 1974 SP - 3 EP - 272 VL - 120 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TRSPY_1974_120_a0/ LA - ru ID - TRSPY_1974_120_a0 ER -