%0 Journal Article %A M. Sh. Shabozov %A Z. Sh. Malakbozov %T Sharp Jackson--Stechkin type inequalities in Hardy space $H_2$ and widths of functional classes %J Ufa mathematical journal %D 2023 %P 74-84 %V 15 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/UFA_2023_15_2_a7/ %G en %F UFA_2023_15_2_a7