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@article{PORMA_1967__26_3_115041, author = {Hsiang, Fu Cheng}, title = {On {Fej\'er's} theorem of {Fourier} series}, journal = {Portugaliae mathematica}, pages = {381--383}, publisher = {mathdoc}, volume = {26}, number = {3}, year = {1967}, mrnumber = {0261259}, zbl = {0188.13703}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1967__26_3_115041/} }
Hsiang, Fu Cheng. On Fejér's theorem of Fourier series. Portugaliae mathematica, Tome 26 (1967) no. 3, pp. 381-383. http://geodesic.mathdoc.fr/item/PORMA_1967__26_3_115041/