Steve Muench. <a href="http://www.w3.org/TR/2000/WD-xslt11req-20000825"><cite>XSL Transformations Requirements Version 1.1.</cite></a> 25 August 2000. W3C Working Draft. (Work in progress.) URL: <a href="http://www.w3.org/TR/2000/WD-xslt11req-20000825">http://www.w3.org/TR/2000/WD-xslt11req-20000825</a>