%0 Journal Article %A Mikihito Hirabayashi %A Ken-ichi Yoshino %T Remarks on unit indices of imaginary abelian number fields II. %J Manuscripta mathematica %D 1989 %P 235-252 %V 64 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1989__64_2_155408/ %F MM2_1989__64_2_155408