@article{ASENS_1957_3_74_2_179_0,
     author = {Vivier, Marcel},
     title = {\'Etude des propri\'et\'es d'op\'erateurs diff\'erentiels par des m\'ethodes d'alg\`ebre ext\'erieure directe},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {179--195},
     publisher = {Elsevier},
     volume = {3e s{\'e}rie, 74},
     number = {2},
     year = {1957},
     doi = {10.24033/asens.1055},
     zbl = {0080.30301},
     mrnumber = {95497},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/asens.1055/}
}