@article{ELMA_1965__20_140801,
     author = {G.J. Rieger},
     title = {Zur {Selbergschen} {Gleichung} f\"ur die arithmetische {Progression.}},
     journal = {Elemente der Mathematik},
     pages = {36--39},
     publisher = {mathdoc},
     volume = {20},
     year = {1965},
     zbl = {0133.29902},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1965__20_140801/}
}