Connections between ${B}_{2,\chi }$ for even quadratic Dirichlet characters $\chi$ and class numbers of appropriate imaginary quadratic fields, I
Compositio Mathematica, Tome 75 (1990) no. 3, pp. 247-270.
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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, {I}},
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publisher = {Kluwer Academic Publishers},
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year = {1990},
zbl = {0706.11058},
language = {en},
url = {http://www.numdam.org/item/CM_1990__75_3_247_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, I. Compositio Mathematica, Tome 75 (1990) no. 3, pp. 247-270. http://www.numdam.org/item/CM_1990__75_3_247_0/

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