@article{PDM_2010_4_a0,
     author = {R. M. Ganopolsky},
     title = {The number of disordered covers of a~finite set by subsets having fixed cardinalities},
     journal = {Prikladna\^a diskretna\^a matematika},
     pages = {5--17},
     publisher = {mathdoc},
     number = {4},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDM_2010_4_a0/}
}