@article{MT_1989_13_a6,
     author = {V. I. Lotov},
     title = {On the asymptotics of distributions in problems with two boundaries for random walks defined on a {Markov} chain},
     journal = {Matemati\v{c}eskie trudy},
     pages = {116--136},
     publisher = {mathdoc},
     volume = {13},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_1989_13_a6/}
}