%0 Journal Article %A S. A. Telyakovskii %T Approximation of differentiable functions by partial sums of their Fourier series %J Matematičeskie zametki %D 1968 %P 291-300 %V 4 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1968_4_3_a4/ %G ru %F MZM_1968_4_3_a4