@article{PDM_2009_10_a23,
     author = {I. N. Kirko and V. P. Kushnir},
     title = {Analysis of network safety with {Markov's} chains},
     journal = {Prikladna\^a diskretna\^a matematika},
     pages = {48--50},
     publisher = {mathdoc},
     number = {10},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDM_2009_10_a23/}
}