@article{MOMA_1977__83_177811,
     author = {Eugen Beck},
     title = {\"Uber {Mittelwerte} aus {Potenzproduktsummen.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {177--190},
     year = {1977},
     volume = {83},
     zbl = {0354.26008},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1977__83_177811/}
}