Reference for “XML-Signature Requirements”

@TechReport{Jr.:99:XR,
  author      = "Joseph Reagle Jr.",
  title       = "{XML}-Signature Requirements",
  month       = oct,
  note        = "http://www.w3.org/TR/1999/WD-xmldsig-requirements-19991014",
  year        = "1999",
  bibsource   = "http://w2.syronex.com/jmr/w3c-biblio",
  type        = "{W3C} Working Draft",
  institution = "W3C",
}