@article{JMPA_1909_6_5__1_0,
     author = {de S\'eguier, J.-A.},
     title = {Sur les formes bilin\'eaires et quadratiques},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {1--63},
     publisher = {Gauthier-Villars},
     volume = {6e s{\'e}rie, 5},
     year = {1909},
     language = {fr},
     url = {http://archive.numdam.org/item/JMPA_1909_6_5__1_0/}
}