@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/}
}