Reference for “SPARQL Protocol for RDF”

@TechReport{Feigenbaum:08:SPR,
  author      = "Lee Feigenbaum and Elias Torres and Kendall Grant Clark",
  title       = "{SPARQL} Protocol for {RDF}",
  month       = jan,
  note        = "http://www.w3.org/TR/2008/REC-rdf-sparql-protocol-20080115/",
  year        = "2008",
  bibsource   = "http://w2.syronex.com/jmr/w3c-biblio",
  type        = "{W3C} Recommendation",
  institution = "W3C",
}