- Educational Technology and Society 9(2):4--18 (2006)
- Educational Technology and Society 9(2):4--18 (2006)
- EC-TEL, volume 6964 of Lecture Notes in Computer Science, page 436-441. Springer, (2011)
- ICALT, page 307-309. IEEE Computer Society, (2011)
- ICALT, page 609-610. IEEE Computer Society, (2011)
- ICALT, page 300-301. IEEE Computer Society, (2011)
- AH, volume 3137 of Lecture Notes in Computer Science, page 156-165. Springer, (2004)
- AH, volume 3137 of Lecture Notes in Computer Science, page 166-175. Springer, (2004)
- Educational Technology & Society 10(3):72-83 (2007)
- International Journal on E-Learning 5(1):25--33 (2006)
- EC-TEL, volume 5794 of Lecture Notes in Computer Science, page 52-66. Springer, (2009)
- Learning in the Synergy of Multiple Disciplines, Proceedings of the EC-TEL 2009, volume 5794 of Lecture Notes in Computer Science, Berlin/Heidelberg, Springer, (October 2009)
- UMAP, volume 5535 of Lecture Notes in Computer Science, page 454-460. Springer, (2009)
- ICALT, page 421-423. IEEE Computer Society, (2005)
- International Journal of Technology Enhanced Learning 1(1/2):1--34 (2008)
- AH, volume 5149 of Lecture Notes in Computer Science, page 224-234. Springer, (2008)
- ProLearn, (2007)
- IJLT 3(3):286-308 (2007)
- (2007)Deliverable 15.2, European Network of Excellence ``Prolearn - Professional E-Learning'' .
- Proceedings of the Sixth International Conference on Advanced Learning Technologies, page 912-914. IEEE, IEEE, (2006)


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