@article{JRAM_1981__328_152396,
     author = {Wolfgang Schwarz and John Knopfmacher},
     title = {Binomial expected values of arithmetical functions.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {84--98},
     publisher = {mathdoc},
     volume = {328},
     year = {1981},
     zbl = {0456.10023},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1981__328_152396/}
}