@article{WolfLuczakSpringeretal.1997,
  author    = {Wolf, Martin and Luczak, Holger and Springer, J. and Simon, S.},
  title     = {The role of metaphors in computer supported cooperative work},
  series = {Proceedings of WWDU '97 Tokyo, Fifth International Scientific Conference on Work with Display Units : November 3 - 5, 1997, Tokyo /},
  journal   = {Proceedings of WWDU '97 Tokyo, Fifth International Scientific Conference on Work with Display Units : November 3 - 5, 1997, Tokyo /},
  editor    = {Miyamoto, Hiroyuki},
  publisher = {-},
  address   = {Tokyo},
  pages     = {191 -- 192},
  year      = {1997},
  language  = {en}
}
@article{WolfSchlickSpringer1997,
  author    = {Wolf, Martin and Schlick, Christopher and Springer, J.},
  title     = {The use of implicit communication mechanisms in desktop-teleconferencing-systems},
  series = {Proceedings of WWDU '97 Tokyo, Fifth International Scientific Conference on Work with Display Units : November 3 - 5, 1997, Tokyo},
  journal   = {Proceedings of WWDU '97 Tokyo, Fifth International Scientific Conference on Work with Display Units : November 3 - 5, 1997, Tokyo},
  editor    = {Miyamoto, Hiroyuki},
  publisher = {-},
  address   = {Tokyo},
  pages     = {193 -- 194},
  year      = {1997},
  language  = {en}
}