@article{MOMA_1980__90_178001,
     author = {Axel Reich},
     title = {Eulerprodukte und diskrete {Mittelwerte.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {303--310},
     publisher = {mathdoc},
     volume = {90},
     year = {1980},
     zbl = {0434.10028},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1980__90_178001/}
}