%0 Journal Article %A John, Kamil %T On the uncomplemented subspace $K(X,Y)$ %J Czechoslovak Mathematical Journal %D 1992 %P 167-173 %V 42 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1992.128319/ %R 10.21136/CMJ.1992.128319 %G en %F 10_21136_CMJ_1992_128319