@article{GDZPPN002402130, title = {On the Absolute N\"orlund Summability of a Fourier Series.}, journal = {Mathematische Zeitschrift}, volume = {105}, year = {1968}, pages = {388-393}, zbl = {0157.38401}, url = {http://dml.mathdoc.fr/item/GDZPPN002402130} }
Shah, S.M.; Rees, Charles. On the Absolute Nörlund Summability of a Fourier Series.. Mathematische Zeitschrift, Tome 105 (1968) pp. 388-393. http://gdmltest.u-ga.fr/item/GDZPPN002402130/