@misc{12054,
  author = {Are Bruaset and Hans Langtangen and G. Zumbusch},
  title = {Domain Decomposition and Multilevel Methods in Diffpack},
  year = {1996},
  journal = {Talk at the 9th International Conference on Domain Decomposition Methods, Ullensvang, Norway},
  month = {June},
  note = {Presented by G. W. Zumbusch},
}