N. Pfleger, T. Becker, D. Neisens, and T. Schwartz. Intelligente Vernetzung in der Fabrik: Industrie 4.0 Umsetzungsbeispiele für die Praxis, Fraunhofer Verlag, Stuttgart, (2015)
D. Cram, A. Kröner, and A. Mille. Workshops Proceedings of the 5th International Conference on Intelligent Environments, volume 4 of Ambient Intelligence and Smart Environments, page 45--50. Amsterdam, IOS Press, (2009)
P. Lessel, M. Müller, and A. Krüger. Proceedings of the 33rd Annual ACM Conference Extended Abstracts on Human Factors in Computing Systems (CHI EA '15), Seoul, Republic of Korea, page 1809--1814. New York, ACM, (2015)