1. R. Diestel, Graph Theory,2nd ed. (Springer-Verlag New York Inc, New York, 2000).
2. S. A. Burr, P. Erdös, L. Lovasz, On graphs of Ramsey type, Ars Combinatoria 1, 167–190(1976).
3. S. A. Burr, P. Erdös, R. J. Faudree, C.C. Rosseu, and R. H. Schelp, Ramsey-minimal Graphs for Forests, Studia Scient. Math. Hungar. 15, 265–273 (1982).
4. J. Nešeťril and V. Rödl, Partitions of Vertices, Comment. Math. Univ. Carolinae 17, 85–95(1976)
5. L. Yulianti, H. Assiyatun, S. Uttunggadewa, and E. T. Baskoro, On Ramsey (K1,2, P4)-minimal graphs, Far East Journal of Mathematical Sciences 40, 23–36(2010).