@article{10_37236_163,
     author = {Kerri Morgan and Graham Farr},
     title = {Certificates of factorisation for chromatic polynomials},
     journal = {The electronic journal of combinatorics},
     year = {2009},
     volume = {16},
     number = {1},
     doi = {10.37236/163},
     zbl = {1186.05056},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/163/}
}