References
- Frank Harary, Graph Theory, Addition – Wesky Publishing Company, 1872.
- S.P. Martin J.S. Powell D.F. Rall, On the independence number of Cartesian product of caterpillars, Ars Combinatoria, 60 (2001) 73–84.
- Sandi Kiavzar, Some New Bounds and Exact Results on the independence number of Cartesian product graphs, Ars Combinatoria, 74 (2005), 173–186.