In: Thomas Roth-Berghofer; Stefan Schulz; Daniel Bahls; David B. Leake (Hrsg.). Proceedings of the Third International Workshop on Explanation-aware Computing. International Workshop on Explanation-aware Computing (ExaCt), 3rd, located at 18th European Conference on Artificial Intelligence ECAI 2008, July 21-22, Patras, Greece, Pages 144-156, Vol. 39, CEUR-WS.org, Aachen, 2008.