Reference for “Requirements for String Identity Matching and String Indexing”

@TechReport{6266683,
  author      = "Martin D{\"{u}}rst",
  title       = "Requirements for String Identity Matching and String Indexing",
  month       = sep,
  note        = "http://www.w3.org/TR/2009/NOTE-charreq-20090915/",
  year        = "2009",
  bibsource   = "http://w2.syronex.com/jmr/w3c-biblio",
  type        = "{W3C} Note",
  institution = "W3C",
}