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@article{MZ_1992__211_3_174455, author = {Kuniaki Horie}, title = {On a ratio between relative class numbers.}, journal = {Mathematische Zeitschrift}, pages = {505--522}, publisher = {mathdoc}, volume = {211}, number = {3}, year = {1992}, zbl = {0761.11039}, url = {http://geodesic.mathdoc.fr/item/MZ_1992__211_3_174455/} }
Kuniaki Horie. On a ratio between relative class numbers.. Mathematische Zeitschrift, Tome 211 (1992) no. 3, pp. 505-522. http://geodesic.mathdoc.fr/item/MZ_1992__211_3_174455/