@TechReport{	  Zumbusch:1996*5,
  author	= {G. W. Zumbusch},
  title		= {Multigrid for Different Finite Difference Equations},
  institution	= {Sintef Applied Mathematics},
  year		= {1996},
  address	= {Oslo, Norway},
  ps		= {http://wissrech.ins.uni-bonn.de/research/pub/zumbusch/mgFdOp.ps.gz}
		  ,
  pdf		= {http://wissrech.ins.uni-bonn.de/research/pub/zumbusch/mgFdOp.pdf}
		  ,
  annote	= {unrefereed},
  abstract	= {The report is a continuation of an introductory report on
		  the multigrid iterative solvers for finite differences in
		  Diffpack. We consider the solution of partial differential
		  equations discretized by finite differences. We consider
		  varying coefficient and anisotropic operators and a variety
		  of strategies for the convection-diffusion equation and the
		  biharmonic equation. In the introductory report only the
		  Laplacian was treated. We also discuss different multigrid
		  restriction and prolongation operators arising in some
		  special multigrid versions. The first steps are guided by a
		  couple of examples.}
}