@article{3125, author = {Sulaiman, W.T.}, title = {On $|\overline{N}, p\_n|\_k$ summability factors of Fourier series}, journal = {Portugaliae mathematica}, volume = {45}, year = {1988}, pages = {115-124}, zbl = {0602.42008}, mrnumber = {0952529}, language = {en}, url = {http://dml.mathdoc.fr/item/3125} }
Sulaiman, W.T. On $|\overline{N}, p_n|_k$ summability factors of Fourier series. Portugaliae mathematica, Tome 45 (1988) pp. 115-124. http://gdmltest.u-ga.fr/item/3125/