%0 Journal Article %A K. Horie %T A note on basic Iwasawa ?-invariants of imaginary quadratic fields. %J Inventiones mathematicae %D 1987 %P 31-38 %V 88 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1987__88_143442/ %F IM_1987__88_143442