%0 Journal Article %A N. K. Nikol'skii %T Selected problems of weighted approximation and spectral analysis %J Informatics and Automation %D 1974 %P 3-272 %V 120 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1974_120_a0/ %G ru %F TRSPY_1974_120_a0