R. Bapat (2010). Graphs and matrices. Universitext. Springer, London, Hindustan Book Agency, New Delhi. A. Ben-Israel and T. Greville (2003). Generalized inverses: theory and applications. 2nd ed, New York, Springer. C. Bu, L. Sun, J. Zhou and Y. Wei (2012). A note on block representations of the group inverse of Laplacian matrices. Electron. J. Linear Algebra. 23, 866-876 H. Chen and F. Zhang (2007). Resistance distance and the normalized Laplacian spectrum. Discrete Appl.Math.. 155, 654-661 Q. Deng and H. Chen (2013). On the Kirchhoff index of the complement of a bipartite graph. Linear Algebra Appl.. 439, 167-173 L. Feng, I. Gutman and G. Yu (2013). Degree Kirchhoff index of unicyclic graphs. MATCH Commun. Math. Comput. Chem.. 69, 629-648 X. Gao, Y. Luo and W Liu (2012). Kirchhoff index in line, subdivision and total graphs of a regular graph. Discrete Appl. Math.. 160, 560-565 I. Gutman, L. Feng and G. Yu (2012). Degree resistance distance of unicyclic graphs. Trans. Combin.. 1 (2), 27-40 S. R. Joe, S. P. Hande, I. Gutman and B. Bozkurt (2012). Derived graphs of some graphs. Kragujevac J. Math.. 36, 309-314 D. J. Klein and M. Randic (1993). Resistance distance. J. Math. Chem.. 12, 81-95 Z. Mehranian (2014). The Laplacian polynomial and Kirchhoff index of $k$-th semi total point graphs. Iranian J. of Mathematical Chemistry. 5, 7-15 J. L. Palacios (2013). Upper and lower bounds for the degree-Kirchhoff index. MATCH Commun. Math. Comput. Chem.. 70, 651-655 L. Sun, W. Wang, J. Zhou and C. Bu (2015). Some results on resistance distance and resistance matrices. Linear Multilinear Algebra, http://dx.doi.org/10.1080/03081087.2013.877011. 63, 523-533 W. Wang, D. Yang and Y. Luo (2013). The Laplacian polynomial and Kirchhoff index of graphs derived from regular graphs. Discrete Appl. Math.. 161, 3063-3071 Y. Yang (2014). Kirchhoff index of subdivisions of graphs. Discrete Appl. Math.. 171, 153-157 Y. Yang and D. Klein Resistance distance-based graph invariants of subdivisions and triangulations of graphs. Discrete Appl. Math., in press. H. Zhang, Y. Yang and C. Li (2009). Kirchhoff index of composite graphs. Discrete Appl. Math.. 157, 2918-2927 B. Zhou and N. Trinajstic (2009). On resistance-distance and Kirchhoff index. Math. Chem.. 46, 283-289