\frac{0}{0\pi k_{0}^{0}\epsilon }\nabla \times \nabla \times  \nonumber  \label{eq:ET00} \\ &&\sum_{j}\int_{S_{j}}d^{0}r^{\prime }\left( {\bf E}({\bf r}^{\prime })\frac{ \partial G({\bf r}^{>},{\bf r}^{\prime })}{\partial {\bf n}}-G({\bf r}^{