@article{NAM_1847_1_6__275_1,
     author = {de Perrodil},
     title = {Question 147. {Trouver} la d\'evelopp\'ee de $a^2x^2+b^2y^2=(x^2+y^2)^2$},
     journal = {Nouvelles annales de math\'ematiques : journal des candidats aux \'ecoles polytechnique et normale},
     pages = {275--277},
     publisher = {Carilian-Goeury et Vor Dalmont},
     volume = {1e s{\'e}rie, 6},
     year = {1847},
     language = {fr},
     url = {http://www.numdam.org/item/NAM_1847_1_6__275_1/}
}