@article{JRAM_1926__155_149581,
     author = {Gertrud Wiegandt},
     title = {Zur nat\"urlichen {Geometrie} einer zehngliedrigen {Gruppe} von {Ber\"uhrungstransformationen} der {Ebene.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {75--92},
     publisher = {mathdoc},
     volume = {155},
     year = {1926},
     zbl = {52.0426.01},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1926__155_149581/}
}