Leora Morgenstern; Stella Mitchell; Adrian Paschke. <a href="http://www.w3.org/TR/2009/WD-rif-test-20091001/"><cite>RIF Test Cases.</cite></a> 1 October 2009. W3C Working Draft. (Work in progress.) URL: <a href="http://www.w3.org/TR/2009/WD-rif-test-20091001/">http://www.w3.org/TR/2009/WD-rif-test-20091001/</a>