%0 Journal Article %A K. Tandori %T Orthogonal series and approximations of functions %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1983 %P 169-179 %V 164 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_1983_164_a10/ %G ru %F TM_1983_164_a10