C. Mosch, R. Anderl, and A. Moura. Proceedings of ASME International Mechanical Engineering Congress and Exposition (IMECE2010), Vancouver, British Columbia, Canada, Volume 3: Design and Manufacturing, Parts A and B, page 363-370. ASME, (2010)
T. Do, and D. Gatica-Perez. Proceedings of the 9th International Conference on Mobile and Ubiquitous Multimedia (MUM '10), Limassol, Cyprus, page 27:1-27:10. ACM, (2010)
M. Veit. Wissenschaftliche Berichte des Institutes für Fördertechnik und Logistiksysteme des Karlsruher Instituts für Technologie KIT Scientific Publishing, Karlsruhe, (2010)