%0 Journal Article %A Song, Yan-Kui %T Spaces with large relative extent %J Czechoslovak Mathematical Journal %D 2007 %P 387-394 %V 57 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMJ_2007__57_1_a28/ %G en %F CMJ_2007__57_1_a28