%0 Journal Article %A Hisaaki Fujita %T Full matrix algebras with structure systems %J Colloquium Mathematicum %D 2003 %P 249-258 %V 98 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm98-2-9/ %R 10.4064/cm98-2-9 %G en %F 10_4064_cm98_2_9