1. IBGE, . Tabela 1.12 - População residente, por sexo e grupos de idade, segundo as Grandes Regiões e as Unidades da Federação - 2010. População: Sinopse do Censo Demográfico de 2010. http://biblioteca.ibge.gov.br/; ????.
2. United Nations Human Rights, . Population Ageing and Development. http://social.un.org/ageing-working-group/documents/2012popageing.2012. Accessed: 01-06-2014.
3. Loureiro, B., Rodrigues, R. Multi-touch as a natural user interface for elders: A survey. In: Information Systems and Technologies (CISTI), 2011 6th Iberian Conference on. 2011, p. 1-6.
4. Piper, A.M., Campbell, R., Hollan, J.D. Exploring the accessibility and appeal of surface computing for older adult health care support. In: Proc. of the SIGCHI Conference on Human Factors in Computing Systems; CHI ‘10. New York, NY, USA: ACM. ISBN 978-1-60558-929-9; 2010, p. 907-916. URL: http://doi.acm.org/10.1145/1753326.1753461. doi:10.1145/1753326.1753461.
5. Taveira, A.D., Choi, S.D. Review study of computer input devices and older users. Intl Journal of Human–Computer Interaction 2009; 25(5):455-474.