@article{BSMF_1877__5__18_1,
     author = {Brocard, H.},
     title = {Sur l'enveloppe de la droite de {Simpson}},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {18--19},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {5},
     year = {1877},
     doi = {10.24033/bsmf.93},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/bsmf.93/}
}