@article{PDM_2013_2_a0,
     author = {S. P. Gorshkov},
     title = {About some properties of {Horn} and {anti-Horn} functions},
     journal = {Prikladna\^a diskretna\^a matematika},
     pages = {5--13},
     year = {2013},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDM_2013_2_a0/}
}