@article{MOMA_1967__71_177367,
     author = {L. Vietoris},
     title = {\"Uber die {Zahl} der in einem k-reduzierten {Restsystem} liegenden {L\"osungen} einer {Kongruenz} x1 + x2 +... + xr ... a (mk).},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {55--63},
     publisher = {mathdoc},
     volume = {71},
     year = {1967},
     zbl = {0154.29402},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1967__71_177367/}
}