%0 Journal Article %A R. Jajte %T Operators on $L^p$-spaces determined by filtrations and pointwise ergodic theorems %J Teoriâ veroâtnostej i ee primeneniâ %D 2009 %P 551-566 %V 54 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/TVP_2009_54_3_a6/ %G en %F TVP_2009_54_3_a6