K. Witte, and K. Geussen. Ganzheitliches, regelbasiertes Verfügbarkeitsmanagement von Produktionssystemen (VeraPro), volume 2 of Verfügbarkeit von Produktionssystemen als Dienstleistung, chapter 9, Apprimus, Aachen, (2009)
B. Dumas, D. Lalanne, D. Guinard, R. Koenig, and R. Ingold. TEI '08: Proceedings of the 2nd International Conference on Tangible and Embedded Interaction, Bonn, Germany, page 47-54. (2008)
R. Pieraccini, and D. Lubensky. Innovations in Applied Artificial Intelligence: 18th International Conference on Industrial and Engineering Applications of Artificial Intelligence and Expert Systems, IEA/AIE 2005, Bari, Italy, volume 3533 of Lecture Notes in Artificial Intelligence, Springer, Berlin, (2005)