ERRATUM

In the article by P. E. Krasnushkin, “Expansion in Normal Waves in a Spherically Layered Medium,” published in Doklady Akademii Nauk, vol. 185, no. 6, 1969, the following corrections must be made:

1) Formula (1) should read

\[ \frac{1}{\sin \theta}\frac{\partial}{\partial \theta} \left(\sin \theta \frac{\partial B}{\partial \theta}\right) +\varepsilon r^{2}\frac{\partial}{\partial r} \left(\frac{1}{\varepsilon}\frac{\partial B}{\partial r}\right) +K_{0}^{2}r^{2}\varepsilon B = \frac{4\pi r^{2}}{c} \left[ i_{r} -\varepsilon \frac{\partial}{\partial r} \left( \frac{r}{\varepsilon}\int i_{\theta}\,d\theta \right) \right]. \tag{1} \]

2) Formula (7) should read

\[ l_{r}{}^{3} = -\frac{\partial}{\partial r} \left[ \frac{1}{\varepsilon}\frac{\partial}{\partial r} \left(\varepsilon r^{2}\cdot\right) \right] + K_{0}^{2}\varepsilon r^{2}. \tag{7} \]

3) Formula (8) should read

\[ \chi_{j}=\bar{\lambda}_{j}, \qquad U_{j}=\overline{X}_{j}/\varepsilon r^{2}. \tag{8} \]