Reference for “Service Modeling Language, Version 1.1”

@TechReport{Popescu:09:SML,
  author      = "Valentina Popescu and Virginia Smith and Bhalchandra Pandit",
  title       = "Service Modeling Language, Version {1.1}",
  month       = may,
  note        = "http://www.w3.org/TR/2009/REC-sml-20090512/",
  year        = "2009",
  bibsource   = "http://w2.syronex.com/jmr/w3c-biblio",
  type        = "{W3C} Recommendation",
  institution = "W3C",
}