\[s\left(\epsilon,\ell;r\right)=\frac{(-1)^{\ell}}{2\nu^{1/2}}\left(\frac{\sin%
\left(\pi\nu\right)}{\pi K(\nu,\ell)}\xi_{\ell}(\nu,r)-\cos\left(\pi\nu\right)%
\nu^{2}K(\nu,\ell)\zeta_{\ell}(\nu,r)\right),\]