@article{GDZPPN002369036, title = {A projective theorie of affinely connected manifolds}, journal = {Mathematische Zeitschrift}, volume = {24}, year = {1926}, pages = {723-733}, zbl = {52.0732.02}, url = {http://dml.mathdoc.fr/item/GDZPPN002369036} }
Thomas, T.Y. A projective theorie of affinely connected manifolds. Mathematische Zeitschrift, Tome 24 (1926) pp. 723-733. http://gdmltest.u-ga.fr/item/GDZPPN002369036/