@article{AFST_1890_1_4_1_D1_0,
     author = {A. Legoux},
     title = {Sur un syst\`eme de courbes orthogonales et homofocales},
     journal = {Annales de la Facult\'e des sciences de Toulouse : Math\'ematiques},
     pages = {D1--D7},
     publisher = {Gauthier-Villars et Fils, Imprimeurs-Libraires},
     address = {Paris},
     volume = {1e s{\'e}rie, 4},
     number = {1},
     year = {1890},
     language = {fr},
     url = {https://afst.centre-mersenne.org/item/AFST_1890_1_4_1_D1_0/}
}