%0 Journal Article %A Kot, Piotr %T Description of simple exceptional sets in the unit ball %J Czechoslovak Mathematical Journal %D 2004 %P 55-63 %V 54 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMJ_2004__54_1_a3/ %G en %F CMJ_2004__54_1_a3