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@article{JRAM_1973__259_151305, author = {Syed A. Husain}, title = {Convergence factors of {Fourier} series of summable functions.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {183--185}, publisher = {mathdoc}, volume = {259}, year = {1973}, zbl = {0264.42007}, url = {http://geodesic.mathdoc.fr/item/JRAM_1973__259_151305/} }
Syed A. Husain. Convergence factors of Fourier series of summable functions.. Journal für die reine und angewandte Mathematik, Tome 259 (1973), pp. 183-185. http://geodesic.mathdoc.fr/item/JRAM_1973__259_151305/