@article{NAM_1848_1_7__396_0,
     author = {Catalan, E.},
     title = {Sur les normales aux coniques},
     journal = {Nouvelles annales de math\'ematiques : journal des candidats aux \'ecoles polytechnique et normale},
     pages = {396--397},
     publisher = {Carilian-Goeury et Vor Dalmont},
     volume = {1e s{\'e}rie, 7},
     year = {1848},
     language = {fr},
     url = {http://www.numdam.org/item/NAM_1848_1_7__396_0/}
}