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@article{CM_1965-1966__17__156_0, author = {Hsiang, Fu Cheng}, title = {On the absolute summability factors of {Fourier} series at a given point}, journal = {Compositio Mathematica}, pages = {156--160}, publisher = {Kraus Reprint}, volume = {17}, year = {1965-1966}, mrnumber = {208268}, zbl = {0178.06501}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CM_1965-1966__17__156_0/} }
Hsiang, Fu Cheng. On the absolute summability factors of Fourier series at a given point. Compositio Mathematica, Tome 17 (1965-1966), pp. 156-160. http://geodesic.mathdoc.fr/item/CM_1965-1966__17__156_0/