@article{JMPA_1890_4_6__145_0,
     author = {Picard, \'Emile},
     title = {M\'emoire sur la th\'eorie des \'equations aux d\'eriv\'ees partielles et la m\'ethode des approximations successives},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {145--210},
     publisher = {Gauthier-Villars},
     volume = {4e s{\'e}rie, 6},
     year = {1890},
     language = {fr},
     url = {http://www.numdam.org/item/JMPA_1890_4_6__145_0/}
}