Yes, but I'm struggling a bit with that. Especially the pre-processing (calculating the quadric coefficients).

I know (R)CSM and it's not the same thing. It does not support correct silhouettes (as it is there). Also, there's no z-buffer correction for shadow mapping in it. I refer to this paper
...

I'm interested in this technique. Unfortunately, the original ressources are offline:

http://fabio.policarpo.nom.br/files/reliefmap4.zip

Does anyone by chance have this file and would be so...