@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://www.numdam.org/item/JMPA_1903_5_9__403_0/}
}