[1] XQuery 3.0: An XML Query Language ( (2014-04-08 08:26:21 +09:00 版)) <http://www.w3.org/TR/xquery-30/#doc-xquery30-EQName>

[2] XML Path Language (XPath) 3.0 ( (2014-04-08 07:58:50 +09:00 版)) <http://www.w3.org/TR/xpath-30/#doc-xpath30-EQName>