@article{MOMA_1959__63_177063,
     author = {P.J. McCarthy},
     title = {On an {Arithmetic} {Function.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {228--230},
     publisher = {mathdoc},
     volume = {63},
     year = {1959},
     zbl = {0095.03001},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1959__63_177063/}
}