Yves Savourel. <a href="http://www.w3.org/TR/2006/WD-itsreq-20060518"><cite>Internationalization and Localization Markup Requirements.</cite></a> 18 May 2006. W3C Working Draft. (Work in progress.) URL: <a href="http://www.w3.org/TR/2006/WD-itsreq-20060518">http://www.w3.org/TR/2006/WD-itsreq-20060518</a>