T. Ley, B. Kump, A. Ulbrich, P. Scheir, und S. Lindstaedt. Proceedings of Ed Media 2008 World Conference on Educational Multimedia, Hypermedia & Telecommunications, Vienna, Austria, June 30-July 4, AACE, Chesapeake, VA, (2008)
A. Ulbrich, P. Scheir, S. Lindstaedt, und M. Görtz. Innovative Approaches for Learning and Knowledge Sharing. Proceedings
of the First European Conference on Technology Enhanced Learning,
EC-TEL 2006 Crete, Greece, October 1-4, 2006., Seite 525-530. (2006)