@inproceedings{27163,
  author       = {{Keil,  Reinhard  and Selke, Harald}},
  editor       = {{Keil, Reinhard  and Selke,  Harald}},
  pages        = {{39--53}},
  publisher    = {{publishing series of the Heinz Nixdorf Institute, Paderborn}},
  title        = {{{Virtual knowledge {\ "a} ume - From the presentation of content to virtual learning {\" a} tten}}},
  volume       = {{330}},
  year         = {{2015}},
}