@article{CMH_1930__2_138539,
     author = {Louis Kollros},
     title = {Sur quelques configurations.},
     journal = {Commentarii mathematici Helvetici},
     pages = {178--190},
     year = {1930},
     volume = {2},
     zbl = {56.1178.05},
     url = {http://geodesic.mathdoc.fr/item/CMH_1930__2_138539/}
}