%0 Journal Article %A Ding, Changming %T The omega limit sets of subsets in a metric space %J Czechoslovak Mathematical Journal %D 2005 %P 87-96 %V 55 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMJ_2005__55_1_a4/ %G en %F CMJ_2005__55_1_a4