@article{BSMF_1872-1873__1__18_1,
     author = {Weyr, E.},
     title = {Quelques th\'eor\`emes nouveaux sur la lemniscate},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {18--19},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {1},
     year = {1872-1873},
     doi = {10.24033/bsmf.1},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/bsmf.1/}
}