@article{JMPA_1857_2_2__213_0,
     author = {Roberts, William},
     title = {Sur une ligne g\'eod\'esique de l'ellipso{\"\i}de},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {213--216},
     publisher = {Gauthier-Villars},
     volume = {2e s{\'e}rie, 2},
     year = {1857},
     language = {fr},
     url = {http://www.numdam.org/item/JMPA_1857_2_2__213_0/}
}