@article{JMPA_1840_1_5__192_0,
     author = {Liouville, J.},
     title = {Sur l'irrationnalit\'e du nombre $e=2,718\ldots$},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {192--192},
     publisher = {Gauthier-Villars},
     volume = {1e s{\'e}rie, 5},
     year = {1840},
     language = {fr},
     url = {http://www.numdam.org/item/JMPA_1840_1_5__192_0/}
}