@book{5720,
  editor       = {{Ackermann, Sebastian and Wünderlich, Nancy and Wangenheim, Florian v.}},
  isbn         = {{9783842301511}},
  publisher    = {{Books on Demand}},
  title        = {{{Geschäftsmodelle in virtuellen Spielwelten}}},
  year         = {{2010}},
}