F. Long, P. Zeiler, and B. Bertsche. Proc. 8th IFAC Conference on Manufacturing Modelling, Management and Control MIM 2016, volume 49 of IFAC-PapersOnLine, page 145-150. (2016)256.
J. Juskowiak, M. Bartholdt, and B. Bertsche. Proceedings of the 21st ISSAT International Conference on Reliability and Quality in Design, page 261-266. (2015)241.