@article{10_4064_ap_12_3_231_256,
     author = {J. Meder},
     title = {On the {N\"orlund} summability of orthogonal series},
     journal = {Annales Polonici Mathematici},
     pages = {231--256},
     year = {1962},
     volume = {12},
     number = {3},
     doi = {10.4064/ap-12-3-231-256},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-12-3-231-256/}
}