@article{MZ_1967__99_170759,
     author = {Helmut Salzmann},
     title = {Kollineationsgruppen ebener {Geometrien.}},
     journal = {Mathematische Zeitschrift},
     pages = {1--15},
     publisher = {mathdoc},
     volume = {99},
     year = {1967},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MZ_1967__99_170759/}
}