1. Amar, R. & Stasko. J. (2004). A knowledge task-based framework for design and evaluation of information visualizations. Proceedings of the IEEE Symposium on information Visualization (October 10–12. INFOVIS. Washington, DC: IEEE Computer Society; 2004. p. 143–150.
2. Avouris, N.M., Dimitracopoulou A., Komis, V. & Fidas C. (2002). OCAF: An object-oriented model of analysis of collaborative problem solving. Proceedings of CSCL 2002, Colorado, January, 2002, Hillsdale: Erlbaum, pp. 92-101.
3. Avouris N, Fiotakis G, Kahrimanis G, Margaritis M, Komis V. Beyond Logging of Fingertip Actions: Analysis of Collaborative Learning Using Multiple Sources of Data. Journal of Interactive Learning Research. 2007;18(2):231–250.
4. Babič, F., Wagner, J., Jadlovská, S. & Leško, P. (2010). A logging mechanism for acquisition of real data from different collaborative systems for analytical purposes. SAMI 2010: 8th International Symposium on Applied Machine Intelligence and Informatics, Herľany, Slovensko. IEEE, 2010, pp. 109-112.
5. Baker RSJD, Yacef K. The State of Educational Data Mining in 2009: A Review and Future Visions. Journal of Educational Data Mining. 2009;1(1):3–17.