%0 Journal Article %A Yu. Kh. Khasanov %A Y. F. Kasimova %T On the relationship of a convolution type transformation and the best approximation of periodic functions %J Matematičeskaâ fizika i kompʹûternoe modelirovanie %D 2021 %P 5-15 %V 24 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/VVGUM_2021_24_1_a0/ %G ru %F VVGUM_2021_24_1_a0