@article{TRSPY_1992_198_a9,
     author = {S. A. Telyakovskii},
     title = {On approximation by {Fourier} sums of differentiable functions of high smoothness},
     journal = {Informatics and Automation},
     pages = {193--211},
     publisher = {mathdoc},
     volume = {198},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1992_198_a9/}
}