%0 Journal Article %A Canh, Nguyen %T On a solution of an optimization problem in linear control systems with quadratic performance index %J Kybernetika %D 1973 %P -123 %V 09 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_1973__9_2_a3/ %G en %F KYB_1973__9_2_a3