In: Auer, Michael E. & Auer, Ursula (eds.): International Conference on Interactive Computer Aided Learning, ICL 2004, Sept. 29 – Oct. 1, 2004, Villach, Austria (CD-ROM).
In: Michael E. Auer, Ursula Auer (Hrsg.): International Conference on Interactive Computer Aided Learning, ICL 2004, 29. September – 1. Oktober 2004, Villach, Austria (CD-ROM).