@article{AIF_1975__25_1_1_0,
     author = {Gras, Georges and Gras, Marie-Nicole},
     title = {Signature des unit\'es cyclotomiques et parit\'e du nombre de classes des extensions cycliques de ${\bf Q}$ de degr\'e premier impair},
     journal = {Annales de l'Institut Fourier},
     pages = {1--22},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {25},
     number = {1},
     year = {1975},
     doi = {10.5802/aif.542},
     zbl = {0297.12009},
     mrnumber = {52 #13728},
     language = {fr},
     url = {https://aif.centre-mersenne.org/articles/10.5802/aif.542/}
}