@article{JRAM_1961__206_150479,
     author = {Martin Barner},
     title = {Zur {M\"obius-Geometrie:} {Die} {Inversionsgeometrie} ebener {Kurven.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {192--220},
     publisher = {mathdoc},
     volume = {206},
     year = {1961},
     zbl = {0104.16202},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1961__206_150479/}
}