%0 Journal Article %A S. A. Telyakovskii %T On the works of S.\,B.~Stechkin on approximation of periodic functions by polynomials %J Fundamentalʹnaâ i prikladnaâ matematika %D 1997 %P 1059-1068 %V 3 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/FPM_1997_3_4_a9/ %G ru %F FPM_1997_3_4_a9