@article{JDM_1940__50_146258,
     author = {D. Barbilian},
     title = {Zur {Axiomatik} der projektiven ebenen {Ringgeometrien.}},
     journal = {Jahresbericht der Deutschen Mathematiker-Vereinigung},
     pages = {179--229},
     publisher = {mathdoc},
     volume = {50},
     year = {1940},
     zbl = {0025.06901},
     url = {http://geodesic.mathdoc.fr/item/JDM_1940__50_146258/}
}