@book{Plattner.2012,
  editor = {Plattner, Hasso and Meinel, Christoph and Leifer, Larry},
  interhash = {261df103785a558d03370df146ee1192},
  intrahash = {4115bfbb02bb136b0c9dc47e9752f824},
  isbn = {9783642216428 3642216420},
  publisher = {Springer Verlag},
  refid = {733236978},
  title = {Design Thinking Research Studying Co-creation in Practice},
  url = {http://www.worldcat.org/search?qt=worldcat_org_all&q=9783642216428},
  year = 2011
}

@book{Plattner.2011,
  address = {Berlin; Heidelberg [u.a.]},
  author = {Plattner, Hasso},
  interhash = {488b7a588b5643c7bc68d385b7bb4893},
  intrahash = {e395709064dc331ca8625bc2623cc655},
  isbn = {9783642137563 3642137563},
  publisher = {Springer},
  refid = {706964787},
  title = {Design thinking : understand, Improve, apply},
  url = {http://www.worldcat.org/search?qt=worldcat_org_all&q=9783642137563},
  year = 2011
}