@article{JMPA_1936_9_15__235_0,
     author = {Li\'enard, A.},
     title = {Signe de la partie r\'eelle des racines d'une \'equation alg\'ebrique},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {235--250},
     publisher = {Gauthier-Villars},
     volume = {9e s{\'e}rie, 15},
     year = {1936},
     zbl = {0014.39006},
     language = {fr},
     url = {http://www.numdam.org/item/JMPA_1936_9_15__235_0/}
}