Computer supported cooperative work and groupware.
Requirements for a virtual collocation environment
Organizational obstacles to interface design and development: two participant-observer studies
ACM Transactions on Computer-Human Interaction
Proceedings of the international ACM SIGGROUP conference on Supporting group work?: the integration challenge the integration challenge - GROUP ’97
Jonathan Grudin
George Engelbeck
Towards the Development of Open Educational Resources: Challenges and Issues
Social presence with video and application sharing
Animated use sketches as design representations