Reference for “Mathematical Markup Language (MathML) Version 2.0 (Second Edition)”

@TechReport{Poppelier:03:MML,
  author      = "Nico Poppelier and Robert Miner and Patrick Ion and David Carlisle",
  title       = "Mathematical Markup Language ({MathML}) Version 2.0 (Second Edition)",
  month       = oct,
  note        = "http://www.w3.org/TR/2003/REC-MathML2-20031021/",
  year        = "2003",
  bibsource   = "http://w2.syronex.com/jmr/w3c-biblio",
  type        = "{W3C} Recommendation",
  institution = "W3C",
}