@article{MOMA_1993__116_2_178623,
     author = {Hubert Delange},
     title = {On the {Integers} n for which ...(n) = k {(II).}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {175--196},
     publisher = {mathdoc},
     volume = {116},
     number = {2},
     year = {1993},
     zbl = {0793.11024},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1993__116_2_178623/}
}