@article{DAN_1964_155_4_a6,
     author = {N. V. Krylov},
     title = {On the existence of $\varepsilon$-optimal homogeneous {Markov} strategies for a controlled chain},
     journal = {Doklady Akademii Nauk},
     pages = {747--750},
     publisher = {mathdoc},
     volume = {155},
     number = {4},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_155_4_a6/}
}