%0 Journal Article %A A. V. Efimov %T Linear methods of approximating certain classes of continuous periodic functions %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1961 %P 3-47 %V 62 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_1961_62_a0/ %G ru %F TM_1961_62_a0