@article{BAG_1978__7_138147,
     author = {B. WERNICKE},
     title = {Ebene \"aquiaffine und metrische {Geometrien}},
     journal = {Beitr\"age zur Algebra und Geometrie},
     pages = {39--58},
     year = {1978},
     volume = {7},
     url = {http://geodesic.mathdoc.fr/item/BAG_1978__7_138147/}
}