@article{JMPA_1836_1_1__187_0,
     author = {Chasles, M.},
     title = {Sur les surfaces du second degr\'e qui n'ont pas de foyer},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {187--190},
     publisher = {Gauthier-Villars},
     volume = {1e s{\'e}rie, 1},
     year = {1836},
     language = {fr},
     url = {http://www.numdam.org/item/JMPA_1836_1_1__187_0/}
}