user- Proceedings of the 15th International Conference on Conceptual Structures ICCS 2007, volume 4604 of Lecture Notes in Artificial Intelligence, page 283--295. Berlin, Heidelberg, Springer-Verlag, (July 2007)
- Proceedings of the 6th IEEE International Conference on Data Mining ICDM 06, page 907-911. Hong Kong, IEEE Computer Society, (December 2006)
- Web Semantics: Science, Services and Agents on the World Wide Web 6(1):38--53 (February 2008)
- The Semantic Web: Research and Applications, volume 4011 of Lecture Notes in Computer Science, page 411-426. Heidelberg, Springer, (June 2006)
- Informatik 2006 -- Informatik für Menschen. Band 2, volume P-94 of Lecture Notes in Informatics, Bonn, Gesellschaft für Informatik, (October 2006)Proc. Workshop on Applications of Semantic Technologies, Informatik 2006 .
- AI Communications Journal, Special Issue on ``Network Analysis in Natural Sciences and Engineering'' 20(4):245-262 (2007)
- Workshop on Social and Collaborative Construction of Structured Knowledge CKC 2007 at WWW 2007, Banff, Canada, (2007)
- Proceedings of the First Conceptual Structures Tool Interoperability Workshop at the 14th International Conference on Conceptual Structures, page 87-102. Aalborg, Aalborg Universitetsforlag, (2006)
- Proc. First International Conference on Semantics And Digital Media Technology SAMT, volume 4306 of LNCS, page 56-70. Heidelberg, Springer, (December 2006)
