@article{MZ_1957__67_169654,
     author = {Detlef Laugwitz},
     title = {Zur {Differentialgeometrie} der {Hyperfl\"achen} in {Vektorr\"aumen} und zur affingeometrischen {Deutung} der {Theorie} der {Finsler-R\"aume.}},
     journal = {Mathematische Zeitschrift},
     pages = {63--74},
     publisher = {mathdoc},
     volume = {67},
     year = {1957},
     zbl = {0077.16001},
     url = {http://geodesic.mathdoc.fr/item/MZ_1957__67_169654/}
}