Geodesic
Some necessary conditions for a polynomial to be chromatic
Diskretnaya Matematika, Tome 13 (2001) no. 1, pp. 73-77

Voir la notice de l'article provenant de la source Math-Net.Ru

Two necessary conditions for a polynomial to be chromatic, which in a series of cases are stronger than some known conditions, are suggested. 
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     author = {V. A. Voblyi},
     title = {Some necessary conditions for a polynomial to be chromatic},
     journal = {Diskretnaya Matematika},
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     publisher = {mathdoc},
     volume = {13},
     number = {1},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_2001_13_1_a3/}
}
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V. A. Voblyi. Some necessary conditions for a polynomial to be chromatic. Diskretnaya Matematika, Tome 13 (2001) no. 1, pp. 73-77. http://geodesic.mathdoc.fr/item/DM_2001_13_1_a3/