@article{NAM_1854_1_13__136_1,
     author = {Lebesgue},
     title = {Sur le rapport de l'arc \`a la corde},
     journal = {Nouvelles annales de math\'ematiques : journal des candidats aux \'ecoles polytechnique et normale},
     publisher = {Carilian-Goeury et Vor Dalmont},
     volume = {1e s{\'e}rie, 13},
     year = {1854},
     pages = {136-137},
     language = {fr},
     url = {http://www.numdam.org/item/NAM_1854_1_13__136_1}
}