@article{MZM_2011_90_4_a3,
     author = {R. A. Zatorskii and A. R. Malyarchuk},
     title = {Generalization of the {Ballot} {Numbers}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {527--529},
     publisher = {mathdoc},
     volume = {90},
     number = {4},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2011_90_4_a3/}
}