no. 3
Connections between B 2,χ for even quadratic Dirichlet characters χ and class numbers of appropriate imaginary quadratic fields, II
Compositio Mathematica, Tome 75 (1990) no. 3, pp. 271-285.
partie précédente Connections between B 2,χ for even quadratic Dirichlet characters χ and class numbers of appropriate imaginary quadratic fields, I
corrigé par Errata to the papers : “Connections between B 2,χ for even quadratic Dirichlet characters χ” and “Class numbers of appropriate imaginary quadratic fields, parts I and II” 
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     author = {Urbanowicz, Jerzy},
     title = {Connections between $B_{2,\chi }$ for even quadratic {Dirichlet} characters $\chi $ and class numbers of appropriate imaginary quadratic fields, {II}},
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     publisher = {Kluwer Academic Publishers},
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     number = {3},
     year = {1990},
     zbl = {0706.11059},
     language = {en},
     url = {http://www.numdam.org/item/CM_1990__75_3_271_0/}
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Urbanowicz, Jerzy. Connections between $B_{2,\chi }$ for even quadratic Dirichlet characters $\chi $ and class numbers of appropriate imaginary quadratic fields, II. Compositio Mathematica, Tome 75 (1990) no. 3, pp. 271-285. http://www.numdam.org/item/CM_1990__75_3_271_0/

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