@article{AFST_1979_5_1_1_1_0,
     author = {Philippe B\'enilan and Michel Pierre},
     title = {In\'equations diff\'erentielles ordinaires avec obstacles irr\'eguliers},
     journal = {Annales de la Facult\'e des sciences de Toulouse : Math\'ematiques},
     pages = {1--8},
     publisher = {Universit\'e Paul Sabatier},
     address = {Toulouse},
     volume = {5e s{\'e}rie, 1},
     number = {1},
     year = {1979},
     zbl = {0433.34010},
     mrnumber = {533595},
     language = {fr},
     url = {https://afst.centre-mersenne.org/item/AFST_1979_5_1_1_1_0/}
}