@article{MAN_1940__117_160036,
     author = {O. Bottema},
     title = {Eine {Geometrie} mit unvollst\"andiger {Anordnung}},
     journal = {Mathematische Annalen},
     pages = {17--26},
     publisher = {mathdoc},
     volume = {117},
     year = {1940},
     zbl = {65.0635.02},
     url = {http://geodesic.mathdoc.fr/item/MAN_1940__117_160036/}
}