Alan Rector. <a href="http://www.w3.org/TR/2005/NOTE-swbp-specified-values-20050517"><cite>Representing Specified Values in OWL: &quot;value partitions&quot; and &quot;value sets&quot;.</cite></a> 17 May 2005. W3C Note. URL: <a href="http://www.w3.org/TR/2005/NOTE-swbp-specified-values-20050517">http://www.w3.org/TR/2005/NOTE-swbp-specified-values-20050517</a>