1. A. Albina and A. Manonmani, “Chromatic Topological Index of VPH(m,n) and Nanotorus,” (2021), (unpublished).
2. On chromatic Zagreb indices of certain graphs
3. J. A. Bondy and U.S.R.Murty, Graph theory with applications (North-Holland, New York, 1982).
4. F. Harary, Graph theory (Addison-Wesley Pub. Co. Inc., Philippines, 1969).
5. A. Bahrami and J. Yazdani, “Topological Index of VPH[m,n] and Nanotorus,” Dig. J. Nanomater. Biostruct. 4, 205–207 (2009).