%0 Journal Article %A Hooda, D. S. %T Sub-additive measures of information improvement %J Kybernetika %D 1983 %P 414-421 %V 19 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_1983__19_5_a4/ %G en %F KYB_1983__19_5_a4