%0 Journal Article %A N. V. Krylov %T On the existence of $\varepsilon$-optimal homogeneous Markov strategies for a controlled chain %J Doklady Akademii Nauk %D 1964 %P 747-750 %V 155 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1964_155_4_a6/ %G ru %F DAN_1964_155_4_a6