@article{SLS_1954-1955__2__A2_0,
     author = {Malgrange, B.},
     title = {Le th\'eor\`eme d'approximation pour les \'equations aux d\'eriv\'ees partielles \`a coefficients constants},
     journal = {S\'eminaire Schwartz},
     note = {talk:1},
     pages = {1--7},
     publisher = {Secr\'etariat math\'ematique},
     volume = {2},
     year = {1954-1955},
     language = {fr},
     url = {http://www.numdam.org/item/SLS_1954-1955__2__A2_0/}
}