%0 Journal Article %A Sumida-Takahashi, Hiroki %T The Iwasawa invariants and the higher -groups associated to real quadratic fields. %J Experimental mathematics %D 2005 %P 307-316 %V 14 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/EXMA_2005__14_3_52134/ %G en %F EXMA_2005__14_3_52134