%0 Journal Article %A A. G. Babenko %A Yu. V. Kryakin %T On constants in the Jackson--Stechkin theorem in the case of approximation by algebraic polynomials %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2018 %P 26-38 %V 303 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_2018_303_a2/ %G ru %F TM_2018_303_a2