\(\frac{V_{\text{CSD}}}{Q_{B}}=\left(2\ G^{2}+t_{f}+\frac{1}{H^{2}}+\frac{2\ G}{H}\right)\ \text{erfc}\left(\frac{G}{\sqrt{t_{f}}}\right)-\frac{e^{2\ G\ H\ +\ H^{2}t_{f}}}{H^{2}}\text{erfc}\left(\frac{G}{\sqrt{t_{f}}}+H\sqrt{t_{f}}\right)-\frac{2\ \left(G\ H+1\right)\ }{\text{H\ }\sqrt{\pi}}\sqrt{t_{f}}\ e^{\frac{-G^{2}}{t_{f}}}\) (41)