%0 Journal Article %A Kakol, Jerzy %T Simple construction of spaces without the Hahn-Banach extension property %J Commentationes Mathematicae Universitatis Carolinae %D 1992 %P 623-624 %V 33 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1992__33_4_a6/ %G en %F CMUC_1992__33_4_a6