%0 Journal Article %A Ryotaro Sato %T On Weak Convergence of Norm Preserving Operators on L2 (X) and its Application to Measure Preserving Transformations. %J Mathematische Zeitschrift %D 1971 %P 203-212 %V 119 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1971__119_171491/ %F MZ_1971__119_171491