\[\Phi\left(-z,m,a\right)=\frac{-\pi}{z^{a}}\sum_{n=0}^{m-1}\frac{b_{n}\left(\ln
z%
\right)^{m-n-1}}{\Gamma\left(m-n\right)}-\sum_{n=1}^{\infty}\frac{\left(-z%
\right)^{-n}}{\left(a-n\right)^{m}},\]