@article{DA_2013_20_3_a4,
     author = {V. K. Trofimov and T. V. Khramova},
     title = {Universal encoding of {Markov's} sources by symbols with varying durations},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {71--83},
     publisher = {mathdoc},
     volume = {20},
     number = {3},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_2013_20_3_a4/}
}