@article{JRAM_1964__0214_0215_150620,
     author = {Gilbert Helmberg and Peter Flor},
     title = {Zur {Definition} der {Verteilungsfunktion} einer reellwertigen {Funktion.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {261--267},
     publisher = {mathdoc},
     volume = {0214_0215},
     year = {1964},
     zbl = {0173.40904},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1964__0214_0215_150620/}
}