@article{PDMA_2019_12_a3,
     author = {N. M. Mezhennaya},
     title = {On the number of $f$-recurrent runs and tuples in a finite {Markov} chain},
     journal = {Prikladnaya Diskretnaya Matematika. Supplement},
     pages = {18--21},
     publisher = {mathdoc},
     number = {12},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDMA_2019_12_a3/}
}