Reference for “XQuery 1.0 and XPath 2.0 Functions and Operators (Second Edition)”

@TechReport{Walsh:09:XXF,
  author      = "Norman Walsh and Michael Kay and Jim Melton and Ashok Malhotra",
  title       = "{XQuery} 1.0 and {XPath} 2.0 Functions and Operators (Second Edition)",
  month       = apr,
  note        = "http://www.w3.org/TR/2009/PER-xpath-functions-20090421/",
  year        = "2009",
  bibsource   = "http://w2.syronex.com/jmr/w3c-biblio",
  type        = "{W3C} Proposed Edited Recommendation",
  institution = "W3C",
}