%0 Journal Article %A Heima Hayashi %T On index formulas of Siegel units in a ring class field %J Acta Arithmetica %D 1986 %P 1-11 %V 47 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-47-1-1-11/ %R 10.4064/aa-47-1-1-11 %G en %F 10_4064_aa_47_1_1_11