@article{SPK_1975-1976__2__A4_0,
     author = {Kr\'ee, Paul},
     title = {Classes d'op\'erateurs \`a puissances nucl\'eaires},
     journal = {\'Equations aux d\'eriv\'ees partielles en dimension infinie},
     note = {talk:4},
     pages = {1--12},
     year = {1975-1976},
     publisher = {Secr\'etariat math\'ematique},
     volume = {2},
     zbl = {0353.46058},
     language = {fr},
     url = {https://www.numdam.org/item/SPK_1975-1976__2__A4_0/}
}