[Haskell] Sequential codes for LinSolv and Ray Tracer

Hello, a simple question: how can I obtain the sequential code for LinSolv and Ray Tracer programs used in [Loidl, 2000] (see below) ? Is it available on-line ? I have downloaded their parallel GpH versions from http://cvs.haskell.org/cgi-bin/cvsweb.cgi/fptools/nofib/parallel/, but I need their sequential versions. Best Regards, Heron [Loidl, 2000] H.-W. Loidl, U. Klusik, K. Hammond, R. Loogen, and P. rinder. GpH and Eden: Comparing Two Parallel Functional Languages on a Beowulf Cluster. In SFP'00 - Scottish Funct. Progr. Workshop, rends in Functional Programming, Vol. 2, pages 39-52. Intellect, 2000. http://citeseer.ist.psu.edu/loidl00gph.html