%0 Journal Article %A L. V. Taikov %T On approximation of periodic functions in the mean %J Doklady Akademii Nauk %D 1965 %P 301-302 %V 163 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1965_163_2_a7/ %G ru %F DAN_1965_163_2_a7