@article{ASENS_1915_3_32__137_0,
     author = {Vessiot, Ernest},
     title = {Sur la r\'eductibilit\'e des \'equations aux d\'eriv\'ees partielles non lin\'eaires du premier ordre, \`a une fonction inconnue},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {137--160},
     publisher = {Elsevier},
     volume = {3e s{\'e}rie, 32},
     year = {1915},
     doi = {10.24033/asens.683},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/asens.683/}
}