%0 Journal Article %A N. P. Korneichuk %T Precise constant in Jackson's inequality for continuous periodic functions %J Matematičeskie zametki %D 1982 %P 669-674 %V 32 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1982_32_5_a8/ %G ru %F MZM_1982_32_5_a8