Kirchhoff index in line,subdivision and total graphs of a regular graph

Let $G$ be a connected regular graph and $l\left(G\right)$, $s\left(G\right)$, $t\left(G\right)$ the line, subdivision, total graphs of $G$, respectively. In this paper, we derive formulae and lower bounds of the Kirchhoff index of $l\left(G\right)$, $s\left(G\right)$ and $t\left(G\right)$, respectively. In particular, we give special formulae for the Kirchhoff index of $l\left(G\right)$, $s\left(G\right)$ and $t\left(G\right)$, where $G$ is a complete graph $K_n$, a regular complete bipartite graph $K_{n,n}$ and a cycle $C_n$.