@article{SDPP_1970-1971__12__A15_0,
     author = {Bertrandias, Fran\c{c}oise},
     title = {$\Gamma $-extensions et invariants cyclotomiques},
     journal = {S\'eminaire Delange-Pisot-Poitou. Th\'eorie des nombres},
     note = {talk:21},
     pages = {1--5},
     publisher = {Secr\'etariat math\'ematique},
     volume = {12},
     year = {1970-1971},
     zbl = {0246.12004},
     language = {fr},
     url = {http://archive.numdam.org/item/SDPP_1970-1971__12__A15_0/}
}