@article{MZ_1959__72_183622,
     author = {Peter Dembowski},
     title = {Freie und offene projektive {Ebenen.}},
     journal = {Mathematische Zeitschrift},
     pages = {410--438},
     publisher = {mathdoc},
     volume = {72},
     year = {1959},
     zbl = {0092.38404},
     url = {http://geodesic.mathdoc.fr/item/MZ_1959__72_183622/}
}