@article{JMPA_1929_9_8__229_0,
     author = {Vessiot, E.},
     title = {Sur les transformations infinit\'esimales et la g\'eom\'etrie diff\'erentielle},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {229--267},
     publisher = {Gauthier-Villars},
     volume = {9e s{\'e}rie, 8},
     year = {1929},
     language = {fr},
     url = {http://www.numdam.org/item/JMPA_1929_9_8__229_0/}
}