%0 Journal Article %A Jin Nakagawa %T Binary forms and orders of algebraic number fields. %J Inventiones mathematicae %D 1989 %P 219-236 %V 97 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1989__97_2_143700/ %F IM_1989__97_2_143700