@article{JMPA_1914_6_10__291_0,
     author = {Li\'enard and Chipart},
     title = {Sur le signe de la partie r\'eelle des racines d'une \'equation alg\'ebrique},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {291--346},
     publisher = {Gauthier-Villars},
     volume = {6e s{\'e}rie, 10},
     year = {1914},
     language = {fr},
     url = {http://archive.numdam.org/item/JMPA_1914_6_10__291_0/}
}