@article{BSMA_1878_2_2_1_298_1,
     author = {Darboux, G.},
     title = {Sur un probl\`eme de g\'eom\'etrie \'el\'ementaire},
     journal = {Bulletin des Sciences Math\'ematiques et Astronomiques},
     pages = {298--304},
     publisher = {Gauthier-Villars},
     volume = {2e s{\'e}rie, 2},
     number = {1},
     year = {1878},
     language = {fr},
     url = {http://www.numdam.org/item/BSMA_1878_2_2_1_298_1/}
}