Research Group of Prof. Dr. M. Griebel
Institute for Numerical Simulation

  author = {H.-J. Bungartz and M. Griebel and D. R\"oschke and C.
  title = {Two proofs of convergence for the combination technique
		  for the efficient solution of sparse grid problems},
  editor = {D. E. Keyes and J. Xu},
  booktitle = {Domain Decomposition Methods in Scientific and Engineering
		  Computing, DDM7},
  address = {Providence},
  publisher = {American Mathematical Society},
  series = {Contemp. Math. 180},
  pages = {15--20},
  annote = {series},
  year = {1994},
  ps = { 1}