@article{MAN_1957__134_160586,
     author = {W. Benz},
     title = {Zur {Theorie} der {M\"obiusebenen} {I.}},
     journal = {Mathematische Annalen},
     pages = {237--247},
     publisher = {mathdoc},
     volume = {134},
     year = {1957},
     zbl = {0081.14703},
     url = {http://geodesic.mathdoc.fr/item/MAN_1957__134_160586/}
}