David Burke; Luc Van Tichelen. <a href="http://www.w3.org/TR/2007/REC-semantic-interpretation-20070405"><cite>Semantic Interpretation for Speech Recognition (SISR) Version 1.0.</cite></a> 5 April 2007. W3C Recommendation. URL: <a href="http://www.w3.org/TR/2007/REC-semantic-interpretation-20070405">http://www.w3.org/TR/2007/REC-semantic-interpretation-20070405</a>