1. Avouris, N., Dimitracopoulou,A., & Komis, V. (2003). On analysis of collaborative problem solving: An object-oriented approach. Computers in Human Behavior, 19, 147–167.
2. Avouris, N., Margaritis,M., & Komis, V. (2004). Modelling interaction during small-group synchronous problem-solving activities: The Synergo approach. Paper presented at the 2nd International Workshop on Designing Computational Models of Collaborative Learning Interaction, ITS2004, 7th Conference on Intelligent Tutoring Systems, Maceio: Brasil.
3. Bratitsis, T., & Dimitracopoulou, A. (2006). Monitoring and analyzing group interactions in asynchronous discussions with the DIAS system. In Y. Dimitriadis, I. Zigurs & E. Gomez-Sanchez (Eds.), Groupware: Design, implementation, and use; Proceedings the of the CRIWG 2006 workshop (pp. 54–61). Berlin, Germany: Springer.
4. Bratitsis, T., & Dimitracopoulou, A. (2008). Interpretation issues in monitoring and analyzing group interactions in asynchronous discussions. International Journal of e-Collaboration, 4, 20–40.
5. Card, K. S., Mackinlay,J. D., & Shneiderman, B. (1999). Readings in information visualization: Using vision to think. San Francisco: Morgan Kaufmann.