@article{JMPA_1903_5_9__376_0, author = {Pech, Robert}, title = {Extrait d'une {Lettre} de {M.} {Robert} {Pech} \`a {M.} {Jordan}}, journal = {Journal de Math\'ematiques Pures et Appliqu\'ees}, pages = {376--376}, publisher = {Gauthier-Villars}, volume = {5e s{\'e}rie, 9}, year = {1903}, language = {fr}, url = {http://archive.numdam.org/item/JMPA_1903_5_9__376_0/} }