Reference for “Mathematical Markup Language (MathML) Version 3.0”

@TechReport{Ion:08:MML,
  author      = "Patrick Ion and David Carlisle and Robert Miner",
  title       = "Mathematical Markup Language ({MathML}) Version 3.0",
  month       = apr,
  note        = "http://www.w3.org/TR/2008/WD-MathML3-20080409/",
  year        = "2008",
  bibsource   = "http://w2.syronex.com/jmr/w3c-biblio",
  type        = "{W3C} Working Draft",
  institution = "W3C",
}