user- Knowledge Maturing at Workplaces of Knowledge Workers: Results of an Ethnographically Informed Study9th International Conference on Knowledge Management I-KNOW '09, Graz, Austria, page 51-61. (2009)
- 12th Congress of the European Association for Palliative Care 2011, Portugal, (2011)
- Proceedings of International Conference on Educational Media Ed-Media 2010, Toronto, June 29-July 2, (2010)
- Sustaining TEL: From Innovation to Learning and Practice 5th European Conference on Technology Enhanced Learning, EC-TEL 2010, Barcelona, Spain, September 28 - October 1, 2010. Proceedings, volume 6383 of Lecture Notes in Computer Science, page 578-583. Springer, (2010)
- Sustaining TEL: From Innovation to Learning and Practice 5th European Conference on Technology Enhanced Learning, EC-TEL 2010, Barcelona, Spain, September 28 - October 1, 2010. Proceedings, volume 6383 of Lecture Notes in Computer Science, page 151-166. Springer, (2010)
- AALIANCE conference, Malaga, Spain, March 11-12, 2010, (2010)
- 9th International Conference on Knowledge Management and Knowledge Technologies, September 2-4, 2009, Graz, Austria, page 259-267. (2009)
- 2. Deutscher Kongress Ambient Assisted Living, Berlin, Januar 2009, VDE Verlag, (2009)
- Verfügbarkeit von Informationen - 30. Online-Tagung der DGI / 60. Jahrestagung der DGI. Frankfurt am Main, 15. - 17. Oktober 2008, Proceedings, Frankfurt, (2008)
- Online Educa 2008, Berlin, December 3-5, (2008)
- OnTheMove Federated Conferences 2008 DAO, COOP, GADA, ODBASE, Monterrey, Mexico, Springer, (2008)
- 8th International Conference on the Design of Cooperative Systems COOP '08, Carry-le-Rouet, France, May 20-23, 2008, (2008)
- IEEE Conference on Advanced Learning Technologies ICALT 08, (2008)
- 8th International Conference on Knowledge Management I-KNOW 08, Graz, (2008)
- International Conference on Ontologies, Databases and Applications of SEmantics ODBASE 2006, On the Move Federated Conferences OTM 2006, Montpellier, volume 4275 of Lecture Notes in Computer Science, page 995-1011. Springer, (2006)
- 1. Deutscher Kongress Ambient Assisted Living AAL 2008, VDE Verlag, (2008)
- 1. Deutscher Kongress Ambient Assisted Living AAL 2008, VDE Verlag, (2008)
- Expanding the Knowledge Economy: Issues, Applications, Case Studies. Proceedings of E-Challenges 2007, Amsterdam, IOS Press, (2007)
- Mensch \& Computer - 7. Fachübergreifende Konferenz - M\&C 2007, page 209-218. München, Oldenbourg Verlag, (2007)
- 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 487-492. Springer, (2007)
