1. Bain, Y. C. (2011). Learning through online discus-sion: a framework evidenced in learners’ inter-actions, Research in Learning Technology, Vol 19, 29-42, DOI: 10.3402/rlt.v19s1/7779;
2. Bernsen, N. O., Dybkjær, H., & Dybkjær, L. (2012). Designing interactive speech systems: From first ideas to user testing. Springer Science & Business Media. https://goo.gl/PZDM5v;
3. Bull, S. (2004). Supporting learning with open learner models. Planning, 29(14), 1. https://www.researchgate.net/profile/Susan_Bull2/publication/228888082_Supporting_learning_with_open_learner_models/ links/0c96052b4861a5d449000000/Supporting-learning-with-open-learner-models.pdf;
4. Chi, M. T. (2009). Active‐constructive‐interactive: A conceptual framework for differentiating learning activities. Topics in cognitive science, 1(1), 73-105. https://doi.org/10.1111/j.1756- 8765.2008.01005.x;
5. Conati, C., Gertner, A., & Vanlehn, K. (2002). Using Bayesian networks to manage uncertainty in student modeling. User modeling and user-adapted interaction, 12(4), 371-417. https://link.springer.com/article/10.1023/A:1021258506583;