%0 Journal Article %A E.C. DADE %T Rings in which no Fixed Power of Ideal Classes Becomes Invertible. Note to the Preceeding Paper of Dade, Taussky and Zassenhaus. %J Mathematische Annalen %D 1962 %P 65-66 %V 148 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1962__148_160984/ %F MAN_1962__148_160984