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@article{MAN_1921__84_158883, author = {L. Neder}, title = {Zur {Theorie} der trigonometrischen {Reihen.}}, journal = {Mathematische Annalen}, pages = {117--136}, publisher = {mathdoc}, volume = {84}, year = {1921}, zbl = {48.0303.02}, url = {http://geodesic.mathdoc.fr/item/MAN_1921__84_158883/} }
L. Neder. Zur Theorie der trigonometrischen Reihen.. Mathematische Annalen, Tome 84 (1921), pp. 117-136. http://geodesic.mathdoc.fr/item/MAN_1921__84_158883/