@article{NAM_1913_4_13__337_1,
     author = {Braude, L.},
     title = {Sur quelques enveloppes},
     journal = {Nouvelles annales de math\'ematiques : journal des candidats aux \'ecoles polytechnique et normale},
     pages = {337--353},
     publisher = {Carilian-Goeury et Vor Dalmont},
     volume = {4e s{\'e}rie, 13},
     year = {1913},
     language = {fr},
     url = {http://www.numdam.org/item/NAM_1913_4_13__337_1/}
}