TY - JOUR AU - Kala, Radosław TI - On commutativity of projectors JO - Discussiones Mathematicae. Probability and Statistics PY - 2008 SP - 157 EP - 165 VL - 28 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DMPS_2008_28_1_a7/ LA - en ID - DMPS_2008_28_1_a7 ER -