Appeared / Erschienen in:
International Conference on Human-Computer Interaction (HCI International) <10, 2003, Crete>) In: Harris, D.: HCI International 2003. Proceedings of the 10th International Conference on Human-Computer Interaction. Vol.3: Cognitive, Social and Ergonomic Aspects Mahwah / NJ.: Erlbaum, 2003, S.961–965.