%0 Journal Article %A Sladký, Karel %T Necessary and sufficient optimality conditions for average reward of controlled Markov chains %J Kybernetika %D 1973 %P -137 %V 09 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_1973__9_2_a4/ %G en %F KYB_1973__9_2_a4