@article{BSMF_1880__8__187_1,
     author = {Lucas, Ed.},
     title = {Sur l'extension du th\'eor\`eme de {Descartes}},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {187--191},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {8},
     year = {1880},
     doi = {10.24033/bsmf.205},
     language = {fr},
     url = {http://archive.numdam.org/articles/10.24033/bsmf.205/}
}