@article{JMPA_1932_9_11__207_0,
     author = {Hadamard, J.},
     title = {Sur certaines propri\'et\'es des {Trajectoires} en {Dynamique}},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {207--207},
     publisher = {Gauthier-Villars},
     volume = {9e s{\'e}rie, 11},
     year = {1932},
     language = {fr},
     url = {http://www.numdam.org/item/JMPA_1932_9_11__207_0/}
}