@article{MAN_1928__100_159293,
     author = {R. Schmidt},
     title = {Die trigonometrische {Approximation} f\"ur eine {Klasse} von verallgemeinerten fastperiodischen {Funktionen}},
     journal = {Mathematische Annalen},
     pages = {334--356},
     publisher = {mathdoc},
     volume = {100},
     year = {1928},
     zbl = {54.0295.03},
     url = {http://geodesic.mathdoc.fr/item/MAN_1928__100_159293/}
}