From Mirroring to Guiding: A Review of State of the Art Technology for Supporting Collaborative Learning.
Soller, A., Martínez-Monés, A., Jermann, P., & Muehlenbrock, M. (2005). From Mirroring to Guiding: A Review of State of the Art Technology for Supporting Collaborative Learning. International Journal of Artificial Intelligence in Education, 15 (4), 261-290.
2005