Yves Lafon; Anish Karmarkar; Martin Gudgin. <a href="http://www.w3.org/TR/2005/REC-soap12-rep-20050125"><cite>Resource Representation SOAP Header Block.</cite></a> 25 January 2005. W3C Recommendation. URL: <a href="http://www.w3.org/TR/2005/REC-soap12-rep-20050125">http://www.w3.org/TR/2005/REC-soap12-rep-20050125</a>