Hi,

Do you know how to convert this recurrence into an equivalent limited history form or maybe somebody know how we can write it as iteration

$\displaystyle S_{0}(z)=\frac{S(z)}{z} $
$\displaystyle
S_{m}(z)=\frac{1}{z}\sum_{k=0}^{m-1}\frac{S_{k}(z)}{m-k}$

Thank you for help,
Magdalena