Michael Cooper. <a href="http://www.w3.org/TR/2003/WD-wcag2-tech-req-20030207"><cite>Requirements for WCAG 2.0 Checklists and Techniques.</cite></a> 7 February 2003. W3C Working Draft. (Work in progress.) URL: <a href="http://www.w3.org/TR/2003/WD-wcag2-tech-req-20030207">http://www.w3.org/TR/2003/WD-wcag2-tech-req-20030207</a>