CLE: Cooperative learning in a distributed multi-media environment. - Jean Schweitzer; Peter Witschital; Birgit Otto; Josef Burgard; Clemens Dietel (Teleteaching, 1993)

CoNus: Workspace-based Intuitive Collaboration in Virtual Enterprises. - Michael Berger 001; Hubertus Hohl; A. Jarczyk; Birgit Otto; M. Schneider; Gerd Völksen (WETICE, 1997)

Multimodal Interfaces for In-Vehicle Applications. - Roman Vilimek; Thomas Hempel; Birgit Otto (HCI (3), 2007)