@article{DAN_1984_275_4_a8,
     author = {I. M. Sonin and E. A. Feinberg},
     title = {Sufficient classes of strategies in controllable countable {Markov} chains with total criterion},
     journal = {Doklady Akademii Nauk},
     pages = {806--809},
     year = {1984},
     volume = {275},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1984_275_4_a8/}
}