@article{MAN_1919__79_158779,
     author = {H. Berliner},
     title = {\"Uber zwei neue projektive nat\"urliche {Geometrien}},
     journal = {Mathematische Annalen},
     pages = {13--39},
     publisher = {mathdoc},
     volume = {79},
     year = {1919},
     zbl = {46.0821.02},
     url = {http://geodesic.mathdoc.fr/item/MAN_1919__79_158779/}
}