- ICDE, page 1477-1478. IEEE, (2007)
- DEXA Workshops, page 465-469. IEEE Computer Society, (2011)
- DEXA Workshops, page 478-482. IEEE Computer Society, (2011)
- DEXA Workshops, page 460-464. IEEE Computer Society, (2011)
- Educational Technology & Society 14(4):11-20 (2011)
- Educational Technology & Society 12(3):115-126 (2009)
- Educational Technology & Society 14(3):218-230 (2011)
- Neurocomputing 75(1):78-87 (2012)
- CoRR (2010)
- CoRR (2010)
- CoRR (2006)
- CoRR (2010)
- JISBD, page 109-120. IBERGARCETA Pub. S.L., (2010)
- JISBD, page 311-320. (2008)
- DEXA Workshops, page 688-692. IEEE Computer Society, (2008)
- SWAT4LS, volume 698 of CEUR Workshop Proceedings, CEUR-WS.org, (2010)
- DEXA 1, volume 6261 of Lecture Notes in Computer Science, page 62-75. Springer, (2010)
- ER, volume 5231 of Lecture Notes in Computer Science, page 514-515. Springer, (2008)
- SIGMOD Conference, page 1139-1142. ACM, (2010)
- DEXA, volume 5690 of Lecture Notes in Computer Science, page 53-67. Springer, (2009)


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