@article{1102706453, author = {Lehmer, D. H.}, title = {The chromatic polynomial of a graph.}, journal = {Pacific J. Math.}, volume = {120}, number = {2}, year = {1985}, pages = { 463-469}, language = {en}, url = {http://dml.mathdoc.fr/item/1102706453} }
Lehmer, D. H. The chromatic polynomial of a graph.. Pacific J. Math., Tome 120 (1985) no. 2, pp. 463-469. http://gdmltest.u-ga.fr/item/1102706453/