@article{MAN_1872__5_156568,
     author = {Klein},
     title = {Ueber {Liniengeometrie} und metrische {Geometrie}},
     journal = {Mathematische Annalen},
     pages = {257--277},
     publisher = {mathdoc},
     volume = {5},
     year = {1872},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MAN_1872__5_156568/}
}