Reference for “PEP Specification: an Extension Mechanism for HTTP”

@TechReport{Prud'hommeaux:97:PSE,
  author      = "Eric Prud'hommeaux and Rohit Khare and Dan Connolly and Henrik Frystyk Nielsen",
  title       = "{PEP} Specification: an Extension Mechanism for {HTTP}",
  month       = nov,
  note        = "http://www.w3.org/TR/WD-http-pep-971121",
  year        = "1997",
  bibsource   = "http://w2.syronex.com/jmr/w3c-biblio",
  type        = "{W3C} Working Draft",
  institution = "W3C",
}