@article{AFST_2024_6_33_1_225_0,
     author = {Bernard Malgrange},
     title = {Deux lettres de {Bernard} {Malgrange} sur la th\'eorie de {Galois} diff\'erentielle non-lin\'eaire},
     journal = {Annales de la Facult\'e des sciences de Toulouse : Math\'ematiques},
     pages = {225--235},
     publisher = {Universit\'e Paul Sabatier, Toulouse},
     volume = {6e s{\'e}rie, 33},
     number = {1},
     year = {2024},
     doi = {10.5802/afst.1769},
     language = {fr},
     url = {https://afst.centre-mersenne.org/articles/10.5802/afst.1769/}
}