@article{NAM_1899_3_18__421_0,
     author = {du Plessis, Philibert},
     title = {Composition math\'ematique d'admission \`a {l'\'Ecole} polytechnique en 1899},
     journal = {Nouvelles annales de math\'ematiques : journal des candidats aux \'ecoles polytechnique et normale},
     pages = {421--435},
     publisher = {Carilian-Goeury et Vor Dalmont},
     volume = {3e s{\'e}rie, 18},
     year = {1899},
     language = {fr},
     url = {http://www.numdam.org/item/NAM_1899_3_18__421_0/}
}