@article{MAN_1961__144_160885,
     author = {H.-J. Kanold},
     title = {\"Uber periodische multiplikative zahlentheoretische {Funktionen.}},
     journal = {Mathematische Annalen},
     pages = {135--141},
     publisher = {mathdoc},
     volume = {144},
     year = {1961},
     zbl = {0096.26003},
     url = {http://geodesic.mathdoc.fr/item/MAN_1961__144_160885/}
}