G. Lüttgen, M. von der Beeck, and R. Cleaveland. SIGSOFT '00/FSE-8: Proceedings of the 8th ACM SIGSOFT international symposium on Foundations of software engineering, 25, page 120--129. New York, NY, USA, ACM Press, (November 2000)
P. Noe, P. Noe, T. Hartrum, and T. Hartrum. National Aerospace and Electronics Conference, 2000. NAECON 2000. Proceedings of the IEEE 2000, page 43--50. (2000)