Reference for “XML Entity definitions for Characters”

@TechReport{Carlisle:09:XEC,
  author      = "David Carlisle and Patrick Ion",
  title       = "{XML} Entity definitions for Characters",
  month       = nov,
  note        = "http://www.w3.org/TR/2009/WD-xml-entity-names-20091117/",
  year        = "2009",
  bibsource   = "http://w2.syronex.com/jmr/w3c-biblio",
  type        = "Last Call {WD}",
  institution = "W3C",
}