@article{ELMA_1977__32_141201,
     author = {G.J. Rieger},
     title = {Bemerkungen \"uber gewisse nichtlineare {Kongruenzen.}},
     journal = {Elemente der Mathematik},
     pages = {113--115},
     publisher = {mathdoc},
     volume = {32},
     year = {1977},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1977__32_141201/}
}