@article{JMPA_1856_2_1__345_0,
     author = {Liouville, J.},
     title = {Sur la th\'eorie g\'en\'erale des \'equations diff\'erentielles},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {345--348},
     publisher = {Gauthier-Villars},
     volume = {2e s{\'e}rie, 1},
     year = {1856},
     language = {fr},
     url = {http://www.numdam.org/item/JMPA_1856_2_1__345_0/}
}