@article{SL_1958-1959__2__A11_0,
     author = {Peetre, Jaak},
     title = {Comparaison d'op\'erateurs diff\'erentiels},
     journal = {S\'eminaire Lelong. Analyse},
     note = {talk:16},
     pages = {1--7},
     publisher = {Secr\'etariat math\'ematique},
     volume = {2},
     year = {1958-1959},
     language = {fr},
     url = {http://www.numdam.org/item/SL_1958-1959__2__A11_0/}
}