@article{PDM_2010_2_a3,
     author = {A. V. Cheremushkin},
     title = {An additive approach to nonlinear degree of discrete function},
     journal = {Prikladna\^a diskretna\^a matematika},
     pages = {22--33},
     publisher = {mathdoc},
     number = {2},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDM_2010_2_a3/}
}