Equation 18.41.3EF4D2AABC4A8

\begin{equation} m^{-1/r}B_{m,r}^{(q)}(m^{-1/(2r)}\zeta ) =\frac r\pi \mathrm{e}^{-|\zeta |^{2r}} \sum _{k=q}^\infty \frac{|\zeta |^{2k}}{\Gamma ((k+1)/r)}. \end{equation}