@article{1183420740, author = {Kasner, Edward}, title = {The infinitesimal contact transformations of mechanics}, journal = {Bull. Amer. Math. Soc.}, volume = {17}, number = {3}, year = {1910}, pages = { 408-412}, language = {en}, url = {http://dml.mathdoc.fr/item/1183420740} }
Kasner, Edward. The infinitesimal contact transformations of mechanics. Bull. Amer. Math. Soc., Tome 17 (1910) no. 3, pp. 408-412. http://gdmltest.u-ga.fr/item/1183420740/