@article{DM_2009_21_4_a1,
     author = {S. N. Selezneva},
     title = {On the complexity of representation of $k$-valued functions by generalised polarised polynomials},
     journal = {Diskretnaya Matematika},
     pages = {20--29},
     publisher = {mathdoc},
     volume = {21},
     number = {4},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_2009_21_4_a1/}
}