1. Gonçalves, R., Martins, J., Pereira, J., Santos, V., Cota, M.P.: Can I access my school website? auditing accessibility of the portuguese teaching institutions websites. J. UCS 19(18), 2639–2655 (2013)
2. Martins, J., Gonçalves, R., Branco, F., Pereira, J., Peixoto, C., Rocha, T.: How Ill Is Online Health Care? An Overview on the Iberia Peninsula Health Care Institutions Websites Accessibility Levels. In: New Advances in Information Systems and Technologies. Springer, pp. 391–400 (2016)
3. Rocha, T.: Interaction metaphor for Access to Digital Information an autonomous form for People with Intellectual Disabilities. Doctoral Thesis. University of Trás-os-Montes and Alto Douro, (2014)
4. Tânia, R., Diana, C., Ramiro, G., José, M., Frederico, B., Maximino, B.: Usability Evaluation of the Touch Screen and Mouse as Input Devices by People with Intellectual Disabilities (2015)
5. ISO (2008) ISO 9241-171—Ergonomics of human-system interaction—guidance on software accessibility. http://www.iso.org/obp/ui/#iso:std:iso:9241:-171:ed-1:v1:en . Accessed 20 Jan 2016