@article{MAN_1955__130_160458,
     author = {K. Sch\"utte},
     title = {Die {Winkelmetrik} in der affin-orthogonalen {Ebene.}},
     journal = {Mathematische Annalen},
     pages = {183--195},
     publisher = {mathdoc},
     volume = {130},
     year = {1955},
     zbl = {0065.36201},
     url = {http://geodesic.mathdoc.fr/item/MAN_1955__130_160458/}
}