%0 Journal Article %A Lutgarde van Heeswijck %T Duality in the theory of crossed products. %J Mathematica Scandinavica %D 1979 %P 313-329 %V 44 %I mathdoc %U http://geodesic.mathdoc.fr/item/MS2_1979__44_166651/ %F MS2_1979__44_166651