@article{AFST_1889_1_3__K1_0,
     author = {P. Appell},
     title = {Sur les \'equations diff\'erentielles homog\`enes du second degr\'e \`a coefficients constants},
     journal = {Annales de la Facult\'e des sciences de Toulouse : Math\'ematiques},
     pages = {K1--K12},
     publisher = {Gauthier-Villars et Fils, Imprimeurs-Libraires},
     address = {Paris},
     volume = {1e s{\'e}rie, 3},
     year = {1889},
     language = {fr},
     url = {https://afst.centre-mersenne.org/item/AFST_1889_1_3__K1_0/}
}