@article{SJL_1965-1966___2_49_0,
     author = {Martineau, Andr\'e},
     title = {\'Equations diff\'erentielles d'ordre infini},
     journal = {S\'eminaire sur les \'equations aux d\'eriv\'ees partielles},
     pages = {49--112},
     year = {1965-1966},
     publisher = {Coll\`ege de France},
     number = {2},
     language = {fr},
     url = {https://www.numdam.org/item/SJL_1965-1966___2_49_0/}
}