%0 Journal Article %A G. G. Akniev %T Approximation of continuous $2\pi$-periodic piecewise smooth functions by discrete Fourier sums %J Izvestiya of Saratov University. Mathematics. Mechanics. Informatics %D 2019 %P 4-15 %V 19 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/ISU_2019_19_1_a0/ %G en %F ISU_2019_19_1_a0