“Two important developers of technical standards for accessible ICT products and services are the W3C Web Accessibility Initiative and the DAISY Consortium.”
WHO/World Bank, World Report on Disability, 2011. p214
(http://www.who.int/disabilities/world_report/2011/report/en/)
DAISY Standards: http://www.daisy.org/
Web Accessibility Guidelines: http://www.w3.org/WAI/