@article{NAM_1858_1_17__319_0,
     author = {Bardin},
     title = {Solution de la question 420},
     journal = {Nouvelles annales de math\'ematiques : journal des candidats aux \'ecoles polytechnique et normale},
     pages = {319--321},
     publisher = {Carilian-Goeury et Vor Dalmont},
     volume = {1e s{\'e}rie, 17},
     year = {1858},
     language = {fr},
     url = {http://www.numdam.org/item/NAM_1858_1_17__319_0/}
}