@article{BSMF_1873-1874__2__144_1,
     author = {Darboux, G.},
     title = {Sur les propri\'et\'es m\'etriques des surfaces du second degr\'e},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {144--153},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {2},
     year = {1873-1874},
     doi = {10.24033/bsmf.55},
     language = {fr},
     url = {http://archive.numdam.org/articles/10.24033/bsmf.55/}
}