@article{10_4064_aa_61_4_307_317,
     author = {Georges Gras},
     title = {Sur la norme du groupe des unit\'es d'extensions quadratiques relatives},
     journal = {Acta Arithmetica},
     pages = {307--317},
     publisher = {mathdoc},
     volume = {61},
     number = {4},
     year = {1992},
     doi = {10.4064/aa-61-4-307-317},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-61-4-307-317/}
}