F. Klompmaker, V. Paelke, and H. Fischer. Distributed, Ambient, and Pervasive Interactions: Proc.\ of the First International Conference (DAPI 2013), Las Vegas, NV, USA, 8028, Springer, Heidelberg, (2013)
S. Trewin, G. Zimmermann, and G. Vanderheiden. CUU '03: Proceedings of the 2003 Conference on Universal Usability, Vancouver, Canada, page 77-84. (2003)