Voir la notice de l'article provenant de la source Numdam
@article{CM_1937__4__308_0, author = {Kerner, Michael}, title = {Abstract differential geometry}, journal = {Compositio Mathematica}, pages = {308--341}, publisher = {Johnson Reprint Corporation}, volume = {4}, year = {1937}, zbl = {0017.02203}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CM_1937__4__308_0/} }
Kerner, Michael. Abstract differential geometry. Compositio Mathematica, Tome 4 (1937), pp. 308-341. http://geodesic.mathdoc.fr/item/CM_1937__4__308_0/