1. Carmichael, A.: Style Guide for the Design of Interactive Television Services for Elderly Viewers. In: Independent Television Commission (1999)
2. Tan, D.S., Pausch, R., Stefanucci, J.K., Proffitt, D.R.: Kinesthetic cues aid spatial memory. In: CHI 2002 Extended Abstracts on Human Factors in Computing Systems, pp. 806–807. ACM, New York (2002)
3. Wood, E., Willoughby, T., Rushing, A., Bechtel, L., Gilbert, J.: Use of Computer Input Devices by Older Adults. Journal of Applied Gerontology 24(5), 419–438 (2005)
4. Piper, A.M., Campbell, R., Hollan, J.D.: Exploring the accessibility and appeal of surface computing for older adult health care support. In: Proceedings of the 28th International Conference on Human Factors in Computing Systems, pp. 907–916. ACM, New York (2010)
5. Miller, G.: The Magical Number Seven, Plus or Minus Two: Some Limits on Our Capacity for Processing Information. The Magical Number Seven, Plus or Minus Two. Psychological Review 63(2), 81–97 (1956)