%0 Journal Article %A Ryszard Grząślewicz %T Density theorems for measurable transformations %J Colloquium Mathematicum %D 1984 %P 245-250 %V 48 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-48-2-245-250/ %R 10.4064/cm-48-2-245-250 %G en %F 10_4064_cm_48_2_245_250