@article{PMB_1977____A4_0,
     author = {Georges Gras},
     title = {Exemple d{\textquoteright}annulateur non principal d{\textquoteright}un groupe de $\chi $-classes relatives},
     journal = {Publications math\'ematiques de Besan\c{c}on. Alg\`ebre et th\'eorie des nombres},
     eid = {4},
     pages = {1--4},
     publisher = {Presses universitaires de Franche-Comt\'e},
     year = {1977},
     doi = {10.5802/pmb.a-14},
     language = {fr},
     url = {https://pmb.centre-mersenne.org/articles/10.5802/pmb.a-14/}
}