%0 Journal Article %A G. G. Akniev %T Approximation properties of Fourier sums for $2\pi$-periodic piecewise linear continuous functions %J Daghestan Electronic Mathematical Reports %D 2016 %P 13-19 %V 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DEMR_2016_5_a1/ %G en %F DEMR_2016_5_a1