Type Curves and Laplace Transforms

[Peter C. Bahrs]

We are researching the generation of type curves for petroleum
engineering applications.  The equations and papers that we have
accumulated use the inversion of the Laplace transform of a diffusivity
equation.

Our major reference is "A Comparison Between Different Skin and Wellbore
Storage Type-Curves For Early Time Transient Analysis" SPE 8205 by
Alain C. Gringarten, et.al.

We are developing tools in C and C++ to perform curve matching.

Does anyone know of public domanin algorithms or further references concerning
the above?  

We are looking for an easy yet effective way to generate the type curves!

Thanks in advance...
pcb at usl.usl.edu   csnet