@book{OPUS4-6472,
  title     = {Proceedings of the 6th 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 Felix Naumann and Holger Giese and Robert Hirschfeld and Mathias Weske and Andreas Polze and Patrick Baudisch},
  isbn      = {978-3-86956-256-8},
  year      = {2013},
}