@article{DAN_1973_209_4_a5,
     author = {G. P. Karev},
     title = {On convergence of functionals of a {Markov} chain},
     journal = {Doklady Akademii Nauk},
     pages = {778--781},
     publisher = {mathdoc},
     volume = {209},
     number = {4},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1973_209_4_a5/}
}