@article{PDM_2011_4_a5,
     author = {A. N. Voropaev},
     title = {Multiplicities of sums in the explicit formulae for counting fixed length cycles in undirected graphs},
     journal = {Prikladna\^a diskretna\^a matematika},
     pages = {42--55},
     publisher = {mathdoc},
     number = {4},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDM_2011_4_a5/}
}