@article{NAM_1869_2_8__81_1,
     author = {Darboux},
     title = {Discussion de la fraction $\frac{ax^2+bx+c}{a^{\prime } x^2+b^{\prime } x+c^{\prime }}$},
     journal = {Nouvelles annales de math\'ematiques : journal des candidats aux \'ecoles polytechnique et normale},
     pages = {81--86},
     publisher = {Carilian-Goeury et Vor Dalmont},
     volume = {2e s{\'e}rie, 8},
     year = {1869},
     language = {fr},
     url = {http://archive.numdam.org/item/NAM_1869_2_8__81_1/}
}