Reference for “Progress Events 1.0”

@TechReport{McCathieNevile:08:PE,
  author      = "Charles McCathieNevile",
  title       = "Progress Events 1.0",
  month       = may,
  note        = "http://www.w3.org/TR/2008/WD-progress-events-20080521",
  year        = "2008",
  bibsource   = "http://w2.syronex.com/jmr/w3c-biblio",
  type        = "{W3C} Working Draft",
  institution = "W3C",
}