@inproceedings{HCI-CCAD-1999-BismarckH,
	author        = "Wolf-Bertram von Bismarck and Markus Held",
	booktitle     = "{Proceedings of the Eighth International Conference on Human-Computer Interaction. Volume 2: Communication, Cooperation, and Application Design}",
	isbn          = "0-8058-3392-7",
	pages         = "477--481",
	publisher     = "{Lawrence Erlbaum}",
	title         = "{Is informal communication needed, wanted and supported?}",
	year          = 1999,
}