@article{BSMF_1898__26__129_1,
     author = {Goursat, E.},
     title = {Sur l'existence des fonctions int\'egrales d'un syst\`eme d'\'equations aux d\'eriv\'ees partielles},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {129--134},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {26},
     year = {1898},
     doi = {10.24033/bsmf.584},
     language = {fr},
     url = {http://archive.numdam.org/articles/10.24033/bsmf.584/}
}