@article{MAN_1960__140_160777,
     author = {H.-J. Kanold},
     title = {\"Uber multiplikativ benachbarte {Funktionen.}},
     journal = {Mathematische Annalen},
     pages = {249--255},
     publisher = {mathdoc},
     volume = {140},
     year = {1960},
     zbl = {0222.10008},
     url = {http://geodesic.mathdoc.fr/item/MAN_1960__140_160777/}
}