@article{MZ_1964__85_170290,
     author = {Andreas Dress},
     title = {Metrische {Ebenen} und projektive {Homomorphismen.}},
     journal = {Mathematische Zeitschrift},
     pages = {116--140},
     year = {1964},
     volume = {85},
     zbl = {0124.13101},
     url = {http://geodesic.mathdoc.fr/item/MZ_1964__85_170290/}
}