Reference for “Geolocation API Specification”

@TechReport{Popescu:09:GAS,
  author      = "Andrei Popescu",
  title       = "Geolocation {API} Specification",
  month       = jul,
  note        = "http://www.w3.org/TR/2009/WD-geolocation-API-20090707/",
  year        = "2009",
  bibsource   = "http://w2.syronex.com/jmr/w3c-biblio",
  type        = "Last Call {WD}",
  institution = "W3C",
}