TY - JOUR AU - F. M. Dong AU - Gordon Royle AU - Dave Wagner TI - Chromatic roots of a ring of four cliques JO - The electronic journal of combinatorics PY - 2011 VL - 18 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.37236/638/ DO - 10.37236/638 ID - 10_37236_638 ER -