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@article{PORMA_1968__27_1_115057, author = {Behzad, Mehdi and Chartrand, Gary}, title = {The line-chromatic polynomial of a graph}, journal = {Portugaliae mathematica}, pages = {31--41}, publisher = {mathdoc}, volume = {27}, number = {1}, year = {1968}, mrnumber = {0260618}, zbl = {0201.26102}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1968__27_1_115057/} }
Behzad, Mehdi; Chartrand, Gary. The line-chromatic polynomial of a graph. Portugaliae mathematica, Tome 27 (1968) no. 1, pp. 31-41. http://geodesic.mathdoc.fr/item/PORMA_1968__27_1_115057/