%0 Journal Article %A E. B. Frid %T On a~problem of D.~Blackwell from the theory of dynamic programming %J Teoriâ veroâtnostej i ee primeneniâ %D 1970 %P 740-745 %V 15 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/TVP_1970_15_4_a13/ %G ru %F TVP_1970_15_4_a13