- Karlsruhe Institute of Technology, (2012)
- EKAW, volume 6317 of Lecture Notes in Computer Science, page 381-390. Springer, (2010)
- Proceedings of the 1st International Workshop on Ontology Repository and Editors for the Semantic Work ORES 2010 at the Extended Semantic Web Conference ESWC 2010, (2010)
- International Conference on Semantic Systems I-SEMANTICS 2009, Graz, Austria, page 445-454. (2009)
- From CSCW to Web2.0: European Developments in Collaborative Design Selected Papers from COOP08, Springer, Berlin/Heidelberg, (2010)
- Proceedings of I-KNOW ´08, 8th International Conference on Knowledge Management, Graz, Austria, September 3-5, page 304-312. (2008)
- IGI Global, (2008)
- International Journal for Technology Enhanced Learning IJTEL 1(1):70-84 (2008)
- Proceedings of the 19th Australasian Conference on Information Systems ACIS 2008, Christchurch, New Zealand, 3-5 December 2008, page 607-616. (2009)
- Good Tags and Bad Tags - Social Tagging in der Wissensorganisation, volume 47 of Medien in der Wissenschaft, Waxmann, (2008)
- 1st Workshop on Incentives for the Semantic Web INSEMTIVE, 7th International Semantic Web Conference ISWC2008, October 27th, 2008, Karlsruhe, Germany, (2008)
- Handbook of Research on Web 2.0, 3.0 and X.0: Technologies, Business, and Social Applications, IGI Global, (2009)
- Practical Aspects of Knowledge Management - 7th International Conference, PAKM2008, Yokohama, Japan, (2008)
- 1st International Workshop on Learning in Enterprise 2.0 and Beyond, volume 383 of CEUR Workshop Proceedings, (2008)
- OnTheMove Federated Conferences 2008 DAO, COOP, GADA, ODBASE, Monterrey, Mexico, Springer, (2008)
- 8th International Conference on Knowledge Management I-KNOW 08, Graz, (2008)
- 8th International Conference on the Design of Cooperative Systems COOP '08, Carry-le-Rouet, France, May 20-23, 2008, (2008)
- XML-Tage 2007, Berlin, (2007)
- International Workshop on Emergent Semantics and Ontology Evolution ESOE, ISWC 2007, Busan/Korea, (2007)
- Proceedings of the Workshop on Social and Collaborative Construction of Structured Knowledge at the 16th International World Wide Web Conference WWW 07, Banff, Canada, (2007)


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