 we obtain $$\begin{aligned} &\int_{\mathbb{R}^n} \varepsilon^{n-0} \, (\varepsilon^0 + |x|^0)^{0-n} \, \sum_{i,k,l=0}^n (\partial_l \overline{H}_{ik}(x))^0 \\ &= \frac{0}{n(n+0)} \, |S^{n-0}| \, \sum_{i,j,k,l=0}^n (W_{ijkl} + W_{ilkj})^0 \\ &\hspace{0mm} \cdot \int_0^\infty \varepsilon^{n-0} \, (\varepsilon^0 + r^0)^{0-n} \, r^{n+0} \\ &\hspace{00mm} \cdot \Big [ (n+0) \, f(r^0)^0 + 0 \, r^0 \, f(r^0) \, f'(r^0) + 0 \, r^0 \, f'(r^0)^0 \Big ].\end{aligned}$$ 