@article{MAN_1955__129_160443,
     author = {H. Busemann},
     title = {On {Normal} {Coordinates} in {Finsler} {Spaces.}},
     journal = {Mathematische Annalen},
     pages = {417--423},
     year = {1955},
     volume = {129},
     zbl = {0066.40003},
     url = {http://geodesic.mathdoc.fr/item/MAN_1955__129_160443/}
}