@article{TVP_1973_18_3_a11,
     author = {B. Ya. Levit and R. Z. Khas'minskii},
     title = {Sequential estimation of the parameter of {a~Markov} chain},
     journal = {Teori\^a vero\^atnostej i ee primeneni\^a},
     pages = {571--582},
     publisher = {mathdoc},
     volume = {18},
     number = {3},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TVP_1973_18_3_a11/}
}