@article{MZ_1923__18_167750,
     author = {Fr: Riesz},
     title = {\"Uber eine {Verallgemeinerung} der {Parsevalschen} {Formel}},
     journal = {Mathematische Zeitschrift},
     pages = {117--124},
     year = {1923},
     volume = {18},
     zbl = {49.0292.03},
     url = {http://geodesic.mathdoc.fr/item/MZ_1923__18_167750/}
}