TY - JOUR AU - Kerri Morgan AU - Graham Farr TI - Certificates of factorisation for chromatic polynomials JO - The electronic journal of combinatorics PY - 2009 VL - 16 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.37236/163/ DO - 10.37236/163 ID - 10_37236_163 ER -