%0 Journal Article %A Banek, Tadeusz %A Kulikowski, Roman %T Information pricing for portfolio optimization %J Control and Cybernetics %D 2003 %P 867-882 %V 32 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CC_2003_32_4_a8/ %G en %F CC_2003_32_4_a8