@article{05900714, title = {On the absolute sum of chromatic polynomial coefficient of graphs.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {2011}, year = {2011}, doi = {10.1155/2011/271987}, zbl = {1213.05070}, language = {en}, url = {http://dml.mathdoc.fr/item/05900714} }
Chen, Shubo. On the absolute sum of chromatic polynomial coefficient of graphs.. International Journal of Mathematics and Mathematical Sciences, Tome 2011 (2011) . doi : 10.1155/2011/271987. http://gdmltest.u-ga.fr/item/05900714/