%0 Journal Article %A V. V. Zhuk %T Some sharp inequalities between uniform best approximations of periodic functions %J Doklady Akademii Nauk %D 1971 %P 263-265 %V 201 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1971_201_2_a0/ %G ru %F DAN_1971_201_2_a0