%0 Journal Article %A Humio Ichimura %A Hiroki Sumida-Takahashi %T On Hilbert–Speiser type imaginary quadratic fields %J Acta Arithmetica %D 2009 %P 385-389 %V 136 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa136-4-5/ %R 10.4064/aa136-4-5 %G en %F 10_4064_aa136_4_5