The 4-class ranks of quadratic fields related to the Weyl group algebra.
Inventiones mathematicae, Tome 77 (1984), pp. 489-516.

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Mots-clés : quadratic field, rank of 2-class group, algorithms for density computations, 4-class rank
@article{IM_1984__77_143157,
     author = {Frank III Gerth},
     title = {The 4-class ranks of quadratic fields related to the {Weyl} group algebra.},
     journal = {Inventiones mathematicae},
     pages = {489--516},
     publisher = {mathdoc},
     volume = {77},
     year = {1984},
     zbl = {0533.12004},
     url = {http://geodesic.mathdoc.fr/item/IM_1984__77_143157/}
}
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Frank III Gerth. The 4-class ranks of quadratic fields related to the Weyl group algebra.. Inventiones mathematicae, Tome 77 (1984), pp. 489-516. http://geodesic.mathdoc.fr/item/IM_1984__77_143157/