@article{GDZPPN002393530, title = {On the absolute N\"orlund summability of a Fourier series.}, journal = {Mathematische Zeitschrift}, volume = {85}, year = {1964}, pages = {18-24}, zbl = {0116.27802}, url = {http://dml.mathdoc.fr/item/GDZPPN002393530} }
Varshney, O.P. On the absolute Nörlund summability of a Fourier series.. Mathematische Zeitschrift, Tome 85 (1964) pp. 18-24. http://gdmltest.u-ga.fr/item/GDZPPN002393530/