Corrections to "Closed-Form Spectral-Domain Green's Functions for Infinitesimal Current Source in Multilayer Soil" [Dec 20 2814-2822]

In [1], in Section V, equations (59) and (60) are incorrect. The correct equations are given as follows: \begin{align*} &\bar{\Theta }_i^{\varphi v} = \frac{{{\bar{\alpha }}_i}}}{{{\bar{\alpha }}_s}}} \cdot \frac{1}{{{\bar{\alpha }}_s}}} \cdot \frac{{\partial \,\bar{\Theta }_i^{Avv}}}{{\partial d}} \tag{59}\\ &\bar{X}_i^{\varphi v} = - \frac{{{\bar{\alpha }}_i}}}{{{\bar{\alpha }}_s}}} \cdot \frac{1}{{{\bar{\alpha }}_s}}} \cdot \frac{{\partial \bar{X}_i^{Avv}}}{{\partial d}}. \tag{60} \end{align*}