@article{ASENS_1954_3_71_4_321_0,
     author = {Herz, Jean-Claude},
     title = {Contribution \`a la th\'eorie alg\'ebrique des \'equations aux d\'eriv\'ees partielles},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {321--362},
     publisher = {Elsevier},
     volume = {3e s{\'e}rie, 71},
     number = {4},
     year = {1954},
     doi = {10.24033/asens.1026},
     mrnumber = {16,1084e},
     zbl = {0058.26801},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/asens.1026/}
}