@article{PDM_2014_4_a1,
     author = {L. N. Bondarenko and M. L. Sharapova},
     title = {Comparisons for numbers of complete mappings},
     journal = {Prikladna\^a diskretna\^a matematika},
     pages = {13--20},
     publisher = {mathdoc},
     number = {4},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDM_2014_4_a1/}
}