Reference for “Arabic mathematical notation”

@TechReport{Miller:06:A,
  author      = "Bruce R. Miller and Azzeddine Lazrek",
  title       = "Arabic mathematical notation",
  month       = jan,
  note        = "http://www.w3.org/TR/2006/NOTE-arabic-math-20060131",
  year        = "2006",
  bibsource   = "http://w2.syronex.com/jmr/w3c-biblio",
  type        = "{W3C} Note",
  institution = "W3C",
}