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@article{MAN_1990__287_1_164707, author = {Jan Nekov\'ar}, title = {Class numbers of quadratic fields and {Shimura's} correspondence.}, journal = {Mathematische Annalen}, pages = {577--594}, publisher = {mathdoc}, volume = {287}, number = {1}, year = {1990}, zbl = {0679.12009}, url = {http://geodesic.mathdoc.fr/item/MAN_1990__287_1_164707/} }
Jan Nekovár. Class numbers of quadratic fields and Shimura's correspondence.. Mathematische Annalen, Tome 287 (1990) no. 1, pp. 577-594. http://geodesic.mathdoc.fr/item/MAN_1990__287_1_164707/