%0 Journal Article %A Kala, Radosław %T On commutativity of projectors %J Discussiones Mathematicae. Probability and Statistics %D 2008 %P 157-165 %V 28 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMPS_2008_28_1_a7/ %G en %F DMPS_2008_28_1_a7