@article{MZM_2011_90_3_a15,
     author = {S. A. Telyakovskii},
     title = {Estimate of the {Simultaneous} {Approximation} of {Functions} and {Their} {Derivatives} by {Fourier} {Sums}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {478--480},
     publisher = {mathdoc},
     volume = {90},
     number = {3},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2011_90_3_a15/}
}