%0 Journal Article %A Wolfgang Krieger %T On Ergodic Flows and the Isomorphism of Factors. %J Mathematische Annalen %D 1976 %P 19-70 %V 223 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1976__223_162874/ %F MAN_1976__223_162874