@article{MAN_1912__71_158517,
     author = {M. Riesz},
     title = {\"Uber summierbare trigonometrische {Reihen}},
     journal = {Mathematische Annalen},
     pages = {54--75},
     publisher = {mathdoc},
     volume = {71},
     year = {1912},
     zbl = {42.0282.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1912__71_158517/}
}