@article{JMPA_1903_5_9__403_0, author = {Le Roux, J.}, title = {Recherches sur les \'equations aux d\'eriv\'ees partielles}, journal = {Journal de Math\'ematiques Pures et Appliqu\'ees}, pages = {403--455}, publisher = {Gauthier-Villars}, volume = {5e s{\'e}rie, 9}, year = {1903}, language = {fr}, url = {http://archive.numdam.org/item/JMPA_1903_5_9__403_0/} }