Ron Daniel Jr.; Eve Maler; Steven DeRose. <a href="http://www.w3.org/TR/2001/CR-xptr-20010911/"><cite>XPointer xpointer() Scheme.</cite></a> January 2001. W3C Candidate Recommendation. (Work in progress.) URL: <a href="http://www.w3.org/TR/2001/CR-xptr-20010911/">http://www.w3.org/TR/2001/CR-xptr-20010911/</a>