D. Albert, and R. Kaluscha. Beiträge zum Achten Arbeitstreffen der GI-Fachgruppe 'Intelligente Lehr-/Lernsysteme', page 89-100. Munich, Technical University of Munich, Institute for Informatics, (September 1997)Exzerpt.....
T. Ley, S. Lindstaedt, and D. Albert. Professional Knowledge Management, volume 3782 of Lecture Notes in Computer Science, Springer, Heidelberg, (2005)
T. Ley, B. Kump, A. Ulbrich, P. Scheir, and S. Lindstaedt. Proceedings of Ed Media 2008 World Conference on Educational Multimedia, Hypermedia & Telecommunications, Vienna, Austria, June 30-July 4, AACE, Chesapeake, VA, (2008)