Jan Richards; Charles McCathieNevile; Jutta Treviranus. <a href="http://www.w3.org/TR/2001/WD-ATAG-wombat-20011221"><cite>Authoring Tool Accessibility Guidelines &quot;Wombat&quot;.</cite></a> 21 December 2001. W3C Working Draft. (Work in progress.) URL: <a href="http://www.w3.org/TR/2001/WD-ATAG-wombat-20011221">http://www.w3.org/TR/2001/WD-ATAG-wombat-20011221</a>