D. Hofmann, M. Kopp, und B. Bertsche. 16th ISSAT International Conference on Reliability and Quality in Design, Seite 163-168. Internat. Soc. of Science and Applied Technologies, (2010)176.
M. Kopp, D. Hofmann, B. Bertsche, C. Heß, und O. Fritz. Proceedings of the 18th International Conference on Engineering Design, Volume 10 von ICED11, Seite 209-220. Design Society, (2011)188.