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@article{DAN_1960_131_2_a3, author = {A. V. Efimov}, title = {On linear methods of summation of {Fourier} series of periodic functions}, journal = {Doklady Akademii Nauk}, pages = {234--237}, publisher = {mathdoc}, volume = {131}, number = {2}, year = {1960}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1960_131_2_a3/} }
A. V. Efimov. On linear methods of summation of Fourier series of periodic functions. Doklady Akademii Nauk, Tome 131 (1960) no. 2, pp. 234-237. http://geodesic.mathdoc.fr/item/DAN_1960_131_2_a3/