%0 Journal Article %A Ibrahim Assem %T Left sections and the left part of an artin algebra %J Colloquium Mathematicum %D 2009 %P 273-300 %V 116 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm116-2-10/ %R 10.4064/cm116-2-10 %G en %F 10_4064_cm116_2_10