Erratum to: Exponentially confining potential well

Formula (16) should be

$$\psi(x)=\sqrt{\rho\biggl(\frac{4\varepsilon}{A_{+}}\biggr)} \,\sum_{n=0}^{N-1}B_n^\mu\biggl(\frac{4\varepsilon}{A_{+}};-\frac{4}{A_{+}}\biggr)\phi_n(x),$$

The editorial staff apologizes to the author.