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@article{PORMA_1988__45_2_115617, author = {Bor, H\"useyin}, title = {On the absolute $\varphi $-summability factors of infinite series}, journal = {Portugaliae mathematica}, pages = {131--138}, publisher = {mathdoc}, volume = {45}, number = {2}, year = {1988}, mrnumber = {0952531}, zbl = {0657.40006}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1988__45_2_115617/} }
Bor, Hüseyin. On the absolute $\varphi $-summability factors of infinite series. Portugaliae mathematica, Tome 45 (1988) no. 2, pp. 131-138. http://geodesic.mathdoc.fr/item/PORMA_1988__45_2_115617/