@article{JMPA_1858_2_3__417_0,
     author = {Bj\"orling, E.-G.},
     title = {Sur l'int\'egration de l'\'equation diff\'erentielle $\left(\mathrm{A}x^2+\mathrm{B}xy+\mathrm{C}y^2+\mathrm{D}x+\mathrm{E}y+\mathrm{F}\right)dx+\left(\mathrm{A}_1x^2+\mathrm{B}_1xy+\mathrm{C}_1y^2+\mathrm{D}_1x+\mathrm{E}_1y+\mathrm{F}_1\right)dy=\mathrm{o}$},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {417--442},
     publisher = {Gauthier-Villars},
     volume = {2e s{\'e}rie, 3},
     year = {1858},
     language = {fr},
     url = {http://www.numdam.org/item/JMPA_1858_2_3__417_0/}
}