%0 Journal Article %A Shishkov, Ivailo %T Hereditarily normal Katětov spaces and extending of usco mappings %J Commentationes Mathematicae Universitatis Carolinae %D 2000 %P 183-196 %V 41 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_2000__41_1_a17/ %G en %F CMUC_2000__41_1_a17