user- CIKM '05: Proceedings of the 14th ACM international conference on Information and knowledge management, page 824--831. New York, NY, USA, ACM Press, (2005)
- SIGIR '05: Proceedings of the 28th annual international ACM SIGIR conference on Research and development in information retrieval, page 178--185. New York, NY, USA, ACM Press, (2005)
- SIGGROUP Bull. 23(1):11--17 (April 2002)
- International Journal of Information Management 26(3):234--248 (June 2006)
- CSCW '06: Proceedings of the 2006 20th anniversary conference on Computer supported cooperative work, page 171--180. New York, NY, USA, ACM Press, (2006)
- CLIHC '05: Proceedings of the 2005 Latin American conference on Human-computer interaction, page 289--294. New York, NY, USA, ACM Press, (2005)
- IUI '04: Proceedings of the 9th international conference on Intelligent user interface, page 93--100. New York, NY, USA, ACM Press, (2004)
- IUI '06: Proceedings of the 11th international conference on Intelligent user interfaces, page 39--46. New York, NY, USA, ACM Press, (2006)
- CSCL '05: Proceedings of th 2005 conference on Computer support for collaborative learning, page 180--189. International Society of the Learning Sciences, (2005)
- WI-IATW '06: Proceedings of the 2006 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology WI-IAT 2006 WorkshopsWI-IATW'06, page 212--215. Washington, DC, USA, IEEE Computer Society, (2006)
- WI-IATW '06: Proceedings of the 2006 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology WI-IAT 2006 WorkshopsWI-IATW'06, page 192--195. Washington, DC, USA, IEEE Computer Society, (2006)
- IUI '04: Proceedings of the 9th international conference on Intelligent user interface, page 117--124. New York, NY, USA, ACM Press, (2004)
- WWW '06: Proceedings of the 15th international conference on World Wide Web, page 327--335. New York, NY, USA, ACM Press, (2006)
- IUI '07: Proceedings of the 12th international conference on Intelligent user interfaces, page 92--101. New York, NY, USA, ACM Press, (2007)
- UIST '06: Proceedings of the 19th annual ACM symposium on User interface software and technology, page 309--318. New York, NY, USA, ACM Press, (2006)
- Web Intelligence and Agent Systems 4(1):77--97 (January 2006)
- IEEE Transactions on Knowledge and Data Engineering 16(1):28--40 (January 2004)
- Inf. Process. Manage. 43(3):791--807 (May 2007)
- IUI '04: Proceedings of the 9th international conference on Intelligent user interfaces, page 198--205. New York, NY, USA, ACM Press, (2004)
- Information Retrieval 10(2):203 (April 2007)
