@book{OPUS4-2793,
  title     = {Proceedings of the 3rd Ph.D. Retreat of the HPI Research School on Service-oriented Systems Engineering},
  editor    = {Christoph Meinel and Hasso Plattner and J{\"u}rgen Roland Friedrich D{\"o}llner and Mathias Weske and Andreas Polze and Robert Hirschfeld and Felix Naumann and Holger Giese},
  isbn      = {978-3-940793-81-2},
  year      = {2009},
}