A Tutorial on
Elliptic PDE Solvers and their Parallelization
published by
SIAM
Craig C. Douglas, Gundolf Haase, and Ulrich Langer:
"A Tutorial on Elliptic PDE Solvers and Their Parallelization"
, SIAM Series Software, Environments, and Tools, 2003,
ISBN 0-89871-541-5
.