Paul Grosso. <a href="http://www.w3.org/TR/1998/NOTE-XML-FRAG-REQ-19981123"><cite>XML Fragment Interchange Requirements, Version 1.0.</cite></a> 23 November 1998. W3C Note. URL: <a href="http://www.w3.org/TR/1998/NOTE-XML-FRAG-REQ-19981123">http://www.w3.org/TR/1998/NOTE-XML-FRAG-REQ-19981123</a>