%0 Journal Article %A I. V. Romanovskii %T The Existence of an Optimal Stationary Policy in a Markovian Decision Process %J Teoriâ veroâtnostej i ee primeneniâ %D 1965 %P 130-133 %V 10 %N 1 %U http://geodesic.mathdoc.fr/item/TVP_1965_10_1_a9/ %G ru %F TVP_1965_10_1_a9