@article{GebhardtJarkeJacobs1997,
  author    = {Gebhardt, Michael and Jarke, Matthias and Jacobs, Stephan},
  title     = {A Toolkit for Negotiation Support Interfaces to Multidimensional Data},
  series = {SIGMOD 1997 : proceedings ACM SIGMOD International Conference on Management of Data, May 13 - 15, 1997, Tucson, Arizona, USA / ed. by Joan M. Peckman},
  journal   = {SIGMOD 1997 : proceedings ACM SIGMOD International Conference on Management of Data, May 13 - 15, 1997, Tucson, Arizona, USA / ed. by Joan M. Peckman},
  publisher = {ACM Press},
  address   = {New York, NY},
  isbn      = {0897919114},
  pages     = {XIV, 586 S : Ill., graph. Darst.},
  year      = {1997},
  language  = {en}
}
@book{Jacobs1997,
  author    = {Jacobs, Stephan},
  title     = {Konfliktvisualisierung im kooperativen Entwurf / Stephan Jacobs. Mit Geleitw. von Helmut Krcmar und Matthias Jarke},
  publisher = {Dt. Univ.-Verl.},
  address   = {Wiesbaden},
  isbn      = {3-8244-6380-6},
  pages     = {XIX, 190 S. : Ill., graph. Darst.},
  year      = {1997},
  language  = {de}
}