1. W3C. (2018). Web Content Accessibility Guidelines (WCAG) 2.1. Retrieved from https://www.w3.org/TR/WCAG21/
2. W3C Web Accessibility Initiative. (2018). Older Users and Web Accessibility: Meeting the Needs of Ageing Web Users. Retrieved from https://www.w3.org/WAI/older-users/
3. Do Ethics Need to be Adapted to mHealth?;U. V.Albrecht;Studies in Health Technology and Informatics,2015
4. Gerontechnology: The importance of user participation in ICT development for older adults.;H.Bjering;Studies in Health Technology and Informatics,2014
5. Professional ethics in gerontechnology: A pragmatic approach