@article{MZ_1930__32_168217,
     author = {W., Rogosinski},
     title = {Zwei {S\"atze} \"uber {Fourierkoeffizienten}},
     journal = {Mathematische Zeitschrift},
     pages = {147--151},
     publisher = {mathdoc},
     volume = {32},
     year = {1930},
     zbl = {56.0937.01},
     url = {http://geodesic.mathdoc.fr/item/MZ_1930__32_168217/}
}