@article{MAN_1975__217_162751,
     author = {Volker Schneider},
     title = {Die elliptischen {Fixpunkte} zu {Modulgruppen} in {Quaternionenschiefk\"orper.}},
     journal = {Mathematische Annalen},
     pages = {29--46},
     publisher = {mathdoc},
     volume = {217},
     year = {1975},
     zbl = {0295.10022},
     url = {http://geodesic.mathdoc.fr/item/MAN_1975__217_162751/}
}