@inproceedings{HCI-CCAD-1999-GrundelS,
	author        = "Christoph Grundel and Matthias Schneider-Hufschmidt",
	booktitle     = "{Proceedings of the Eighth International Conference on Human-Computer Interaction. Volume 2: Communication, Cooperation, and Application Design}",
	isbn          = "0-8058-3392-7",
	pages         = "8--13",
	publisher     = "{Lawrence Erlbaum}",
	title         = "{A direct manipulation user interface for the control of communication processes — making call handling manageable}",
	year          = 1999,
}