%0 Journal Article %A V. G. Doronin %A A. A. Ligun %T Best one-sided approximation of certain classes of functions %J Matematičeskie zametki %D 1981 %P 431-454 %V 29 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1981_29_3_a10/ %G ru %F MZM_1981_29_3_a10