@book{OPUS4-33866,
  title     = {Dsign thinking research : studying co-creation in practice},
  editor    = {Plattner, Hasso and Meinel, Christoph and Leifer, Larry},
  publisher = {Springer Berlin Heidelberg},
  address   = {Berlin, Heidelberg},
  isbn      = {978-3-642-21642-8},
  doi       = {10.1007/978-3-642-21643-5},
  pages     = {277 S.},
  year      = {2012},
  language  = {en}
}
@book{OPUS4-18498,
  title     = {Proceedings of the Fifth Dutch German Workshop on Nonmonotonic Reasoning Techniques and their Applications, DGNMR'2001, Potsdam, 4. - 6. April 2001},
  editor    = {Brewka, Gerhard and Witteveen, Cees and Schaub, Torsten},
  address   = {Potsdam},
  year      = {2001},
  language  = {en}
}