%0 Journal Article %A Jun Shen Fang %A Chun-Lan Jiang %A Pei Yuan Wu %T Direct sums of irreducible operators %J Studia Mathematica %D 2003 %P 37-49 %V 155 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm155-1-3/ %R 10.4064/sm155-1-3 %G en %F 10_4064_sm155_1_3