1. O’Connel, T.A.: The why and how of senior-focus design. In: Lazar, J. (ed.) Universal Design: Designing Computer Interfaces for Diverse Users, pp. 43–92. Halsted Press, New York (2008)
2. Haddon, L., Paul, G.: Design in the ICT Industry: The role of users. In: Coombs, R., Green, K., Richards, A., Walsh, V. (eds.) Technology and the Market: Demand, Users and Innovation, pp. 201–215. Edward Elgar Publishing, Cheltenham (2001)
3. Vandi, C., Rico-Duarte, L., Thibault, T., Rougeaux, M., Tijus, C.: Seniors et Tablettes Interactives. Livre Blanc de la Délégation aux Usages de l’Internet (2011)
4. Emiliani, L.: Perspectives on accessibility: from assistive technologies to universal access and design for all. In: Stephanidis, C. (ed.) The Universal Access Handbook, ch. 2, CRC Press (2009)
5. Erlandson, M.F.: Universal and accessible design for products, services and processes. CRC Press, Boca Raton (2008)