@article{ASENS_1921_3_38__13_0,
     author = {Riquier, Charles},
     title = {Sur le prolongement analytique des int\'egrales de certains syst\`emes d'\'equations aux d\'eriv\'ees partielles lin\'eaires},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {13--41},
     publisher = {Elsevier},
     volume = {3e s{\'e}rie, 38},
     year = {1921},
     doi = {10.24033/asens.730},
     language = {fr},
     url = {http://archive.numdam.org/articles/10.24033/asens.730/}
}