K. Böhm, and J. Härtwig. Proceedings of the 6th European Conference on Knowledge Management;
08. September – 09. September 2004, page 227–236. Reading, England: Academic Conferences Limited, (2005)
K. Böhm, and J. Härtwig. Proceedings of the 6th European Conference on Knowledge Management; 08. September – 09. September 2004, page 227–236. Reading, England: Academic Conferences Limited, (2005)
S. Auer, and K. Fähnrich. HCI International 2003. Proceedings of the 10th International Conference
on Human-Computer Interaction, 3, page 956-960. (2003)