@article{JMPA_1868_2_13__1_0, author = {Liouville, J.}, title = {Extrait d'une {Lettre} adress\'ee \`a {M.} {Besge}}, journal = {Journal de Math\'ematiques Pures et Appliqu\'ees}, pages = {1--4}, publisher = {Gauthier-Villars}, volume = {2e s{\'e}rie, 13}, year = {1868}, language = {fr}, url = {http://archive.numdam.org/item/JMPA_1868_2_13__1_0/} }