%0 Journal Article %A Hirabayashi, Mikihito %T A determinant formula for the relative class number of an imaginary abelian number field %J Communications in Mathematics %D 2014 %P 133-140 %V 22 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/COMIM_2014__22_2_a1/ %G en %F COMIM_2014__22_2_a1