@article{ASENS_1972_4_5_4_517_0,
     author = {Bertrandias, Fran\c{c}oise and Payan, Jean-Jacques},
     title = {$\Gamma $-extensions et invariants cyclotomiques},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {517--543},
     publisher = {Elsevier},
     volume = {4e s{\'e}rie, 5},
     number = {4},
     year = {1972},
     doi = {10.24033/asens.1236},
     mrnumber = {49 #2651},
     zbl = {0246.12005},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/asens.1236/}
}