1. Y. Alavi and M. Behzad, "Complementary Graphs and Edge Chromatic Numbers", J. SIAM Appl. Math. (to appear).
2. Y. Alavi and J. Mitchem, "Connectivity and Line-Connectivity of Complementary Graphs", (this volume).
3. M. Behzad, Graphs and Their Chromatic Numbers, Doctoral thesis, Michigan State University, 1965.
4. G.A. Dirac, "Graph Union and Chromatic Number", J. London Math. Soc., 39 (1964), 451–454.
5. H.J. Finck, "On the Chromatic Numbers of a Graph and its Complement", Theory of Graphs (P. Erdos and G. Katona, eds.) Academic Press (1968), 99–113.