@article{GDZPPN002284502, title = {On Normal Coordinates in Finsler Spaces.}, journal = {Mathematische Annalen}, volume = {129}, year = {1955}, pages = {417-423}, zbl = {0066.40003}, url = {http://dml.mathdoc.fr/item/GDZPPN002284502} }
Busemann, H. On Normal Coordinates in Finsler Spaces.. Mathematische Annalen, Tome 129 (1955) pp. 417-423. http://gdmltest.u-ga.fr/item/GDZPPN002284502/