%0 Journal Article %A Tuzar, AntonĂ­n %T Optimal discrete approximation of continuous linear operators applicable to control problems %J Kybernetika %D 1985 %P 287-297 %V 21 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_1985__21_4_a4/ %G en %F KYB_1985__21_4_a4