H. Son, B. Kim, T. Kim, D. Lee, and S. Hyun. Distributed, Ambient, and Pervasive Interactions: Proc.\ of the First International Conference (DAPI 2013), Las Vegas, NV, USA, 8028, Springer, Heidelberg, (2013)
D. Zühlke. Nutzergerechte Entwicklung von Mensch-Maschine-Systemen: Useware-Engineering für technische Systeme, chapter 7, Springer, Berlin, 2 edition, (2012)