1. M.-M. Dere, P. Franki, I. C. Rosenberg (eds.), Algebraic, Extremal, and Metric Combinatorics, Math. Soc Lect Notes Series, Vol. 131 (1987).
2. O. Ore, Theory of Graphs [Russian translation], Nauka, Moscow (1968).
3. F. Harary, Graph Theory [Russian translation], Mir, Moscow (1973).
4. M. Aschbacher, “Chromatic geometry,” Q. J. Math.,2(38), No. 2 277–296 (1987).
5. E. Banai and T. Ito, Algebraic Combinatorics [Russian translation], Mir, Moscow (1987).