- ECCE 2011 - European Conference on Cognitive Ergonomics, ACM Press, (2011)
- ACM WebSci 2011, 3rd International Conference on Web Science, June 14-17, Koblenz/Germany, (2011)
- Networked Knowledge - Networked Media: Integrating Knowledge Management, New Media Technologies and Semantic Systems, Springer, (2009)
- ACM Trans. Comput.-Hum. Interact. (July 2010)
- RecSys '08: Proceedings of the 2008 ACM conference on Recommender systems, page 163--170. New York, NY, USA, ACM, (2008)
- Trends in Cognitive Science 12(4):129-135 (April 2008)
- UMAP, volume 5535 of Lecture Notes in Computer Science, page 223-234. Springer, (2009)
- CSCW '08: Proceedings of the ACM 2008 conference on Computer supported cooperative work, page 239--248. New York, NY, USA, ACM, (2008)
- CSCW '08: Proceedings of the ACM 2008 conference on Computer supported cooperative work, page 229--238. New York, NY, USA, ACM, (2008)
- Journal of Information Science 32(2):198-208 (2006)
- 2006--10. Computer Science Department, Stanford University, (April 2006)
- HT '08: Proceedings of the nineteenth ACM conference on Hypertext and hypermedia, page 71--80. New York, NY, USA, ACM, (2008)
- Proceedings of the National Academy of Sciences of the United States of America 104(5):1461-1464 (2007)
- WWW '07: Proceedings of the 16th international conference on World Wide Web, page 211--220. New York, NY, USA, ACM, (2007)
- HT '09: Proceedings of the Twentieth ACM Conference on Hypertext and Hypermedia, New York, NY, USA, ACM, (July 2009)
- Proceedings of the Workshop on Social and Collaborative Construction of Structured Knowledge CKC 2007 at the 16th International World Wide Web Conference WWW2007 Banff, Canada, May 8, 2007, volume 273 of CEUR Workshop Proceedings, (2007)
- The Semantic Web -- ISWC 2008, Proc.Intl. Semantic Web Conference 2008, volume 5318 of LNAI, Springer, Heidelberg, (2008)
- RecSys '09: Proceedings of the 2009 ACM Conference on Recommender Systems, New York, NY, USA, ACM, (2009)to appear .
- Proceedings of CHI 2009, page 1795-1798. (2009)
- CHI '09: Proceedings of the 27th international conference on Human factors in computing systems, ACM, New York, NY, USA, (2009)


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