@article{10_4064_ap_56_1_11_17,
     author = {H\"usey{\i}n Bor},
     title = {Absolute {N\"orlund} summability factors of power series and {Fourier} series},
     journal = {Annales Polonici Mathematici},
     pages = {11--17},
     publisher = {mathdoc},
     volume = {56},
     number = {1},
     year = {1991},
     doi = {10.4064/ap-56-1-11-17},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-56-1-11-17/}
}