%0 Journal Article %A H. Zassenhaus %A E.C. DADE %A TAUSSKY O. %T On the theory of orders, in particular on the semigroup of ideal classes and genera of an order in an algebraic number field. %J Mathematische Annalen %D 1962 %P 31-64 %V 148 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1962__148_160983/ %F MAN_1962__148_160983