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@article{DAN_1957_114_5_a3, author = {A. V. Efimov}, title = {Approximation of certain classes of continuous functions by {Fourier} sums and {Fejer} means}, journal = {Doklady Akademii Nauk}, pages = {930--933}, publisher = {mathdoc}, volume = {114}, number = {5}, year = {1957}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1957_114_5_a3/} }
A. V. Efimov. Approximation of certain classes of continuous functions by Fourier sums and Fejer means. Doklady Akademii Nauk, Tome 114 (1957) no. 5, pp. 930-933. http://geodesic.mathdoc.fr/item/DAN_1957_114_5_a3/