@article{TVP_1970_15_4_a13,
     author = {E. B. Frid},
     title = {On a~problem of {D.~Blackwell} from the theory of dynamic programming},
     journal = {Teori\^a vero\^atnostej i ee primeneni\^a},
     pages = {740--745},
     publisher = {mathdoc},
     volume = {15},
     number = {4},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TVP_1970_15_4_a13/}
}