@article{JMPA_1938_9_17_1-4_425_0,
     author = {Julia, Gaston},
     title = {Sur la r\'esolubilit\'e des syst\`emes d'\'equations lin\'eaires dans un espace hilbertien},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {425--437},
     publisher = {Gauthier-Villars},
     volume = {9e s{\'e}rie, 17},
     number = {1-4},
     year = {1938},
     zbl = {0019.31003},
     language = {fr},
     url = {http://archive.numdam.org/item/JMPA_1938_9_17_1-4_425_0/}
}