@article{MOMA_1965__69_177278,
     author = {H. Brauner},
     title = {Kreisgeometrie in der isotropen {Ebene.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {105--128},
     publisher = {mathdoc},
     volume = {69},
     year = {1965},
     zbl = {0141.19002},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1965__69_177278/}
}