@article{JMPA_1938_9_17_1-4_275_0,
     author = {Leau, L.},
     title = {Th\'eor\`eme fondamental d'existence pour un syst\`eme mixte fonctionnel diff\'erentiel},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {275--290},
     publisher = {Gauthier-Villars},
     volume = {9e s{\'e}rie, 17},
     number = {1-4},
     year = {1938},
     zbl = {0019.06402},
     language = {fr},
     url = {http://archive.numdam.org/item/JMPA_1938_9_17_1-4_275_0/}
}