- Inf. Soc. 28(1):53-54 (2012)
- IAT, page 450-453. IEEE Computer Society, (2007)
- IEEE Trans. Knowl. Data Eng. 22(11):1507-1520 (2010)
- TLT 1(1):20-33 (2008)
- TLT 1(1):88-102 (2008)
- Secure Data Management, volume 3178 of Lecture Notes in Computer Science, page 118-132. Springer, (2004)
- ESWS, volume 3053 of Lecture Notes in Computer Science, page 342-356. Springer, (2004)
- AH, volume 3137 of Lecture Notes in Computer Science, page 34-43. Springer, (2004)
- WEBIST Selected Papers, volume 45 of Lecture Notes in Business Information Processing, page 142-156. Springer, (2009)
- (2008)
- Proceedings of the W3C Workshop on the Future of Social Networking, (January 2009)
- Workshop on Answer Set Programming and Other Computing Paradigms ASPOCP 2008, 24th International Conference on Logic Programming ICLP 2008, Udine, Italy, (2008)
- (2007)
- Inteligencia Artificial, Revista Iberoamericana de Inteligencia Artificial 11(33):79-84 (2007)
- Web Information Systems and Technologies, 5th International Conference, WEBIST 2009, Lisbon, Portugal, March 23-26, 2009, Revised Selected Papers, volume 45 of Lecture Notes in Business Information Processing, page 142-156. Springer, (2010)
- WEBIST 2009 - Proceedings of the Fifth International Conference on Web Information Systems and Technologies, Lisbon, Portugal, March 23-26, 2009, page 184-191. INSTICC Press, (2009)
- TLT 1(1):20-33 (2008)
- Creating New Learning Experiences on a Global Scale, Second European Conference on Technology Enhanced Learning, EC-TEL 2007, Crete, Greece, September 17-20, 2007, Proceedings, volume 4753 of Lecture Notes in Computer Science, page 143-157. Springer, (2007)
- The Semantic Web, 6th International Semantic Web Conference, 2nd Asian Semantic Web Conference, ISWC 2007 + ASWC 2007, Busan, Korea, November 11-15, 2007, volume 4825 of Lecture Notes in Computer Science, page 1-14. Springer, (2007)
- UMAP, volume 6075 of Lecture Notes in Computer Science, page 339-350. Springer, (2010)


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