@article{MZ_1923__16_174958,
     author = {F. Hausdorff},
     title = {Eine {Ausdehnung} des {Parsevalschen} {Satzes} \"uber {Fourierreihen}},
     journal = {Mathematische Zeitschrift},
     pages = {163--169},
     publisher = {mathdoc},
     volume = {16},
     year = {1923},
     zbl = {49.0200.01},
     url = {http://geodesic.mathdoc.fr/item/MZ_1923__16_174958/}
}