@article{JMPA_1930_9_9__391_0,
     author = {Chapelon, Jacques},
     title = {Sur les minima des formes quadratiques binaires et positives},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {391--417},
     publisher = {Gauthier-Villars},
     volume = {9e s{\'e}rie, 9},
     year = {1930},
     language = {fr},
     url = {http://www.numdam.org/item/JMPA_1930_9_9__391_0/}
}