MathSciNet bibliographic data MR2833507 (2012e:11189) 11R29 (11R20 11Y40) Ahn, Jeoung-Hwan; Kwon, Soun-Hi The imaginary abelian number fields of $2$$2$-power degrees with ideal class groups of exponent $\leq 2$$\leq 2$. Math. Comp. 81 (2012), no. 277, 533–554. Article

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