@article{JMPA_1852_1_17__175_0,
     author = {Bertrand, J.},
     title = {Note sur l'int\'egration des \'equations diff\'erentielles},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {175--176},
     publisher = {Gauthier-Villars},
     volume = {1e s{\'e}rie, 17},
     year = {1852},
     language = {fr},
     url = {http://www.numdam.org/item/JMPA_1852_1_17__175_0/}
}