S. Lau, und K. David. Assistive and Augmentive Communication for the Disabled: Intelligent Technologies for Communication, Learning and Teaching, Kapitel 6, IGI Global, (Mai 2011)
C. Voigtmann, S. Lau, und K. David. 2011 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops), Seite 403-408. Seattle, USA., IEEE, (März 2011)
O. Drogehorn, S. Haseloff, T. Loeffler, W. Dargie, S. Lau, und K. David. Intelligent Sensors, Sensor Networks and Information Processing Conference, 2005. Proceedings of the 2005 International Conference on, Seite 211 - 216. (2005)