%0 Journal Article %A Chen, Huanyin %T Strong separativity over exchange rings %J Czechoslovak Mathematical Journal %D 2008 %P 417-428 %V 58 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMJ_2008__58_2_a7/ %G en %F CMJ_2008__58_2_a7