Reference for “List of suggested extensions to CSS”

@TechReport{Bos:98:LC,
  author      = "Bert Bos",
  title       = "List of suggested extensions to {CSS}",
  month       = dec,
  note        = "http://www.w3.org/TR/1998/NOTE-CSS-potential-19981210",
  year        = "1998",
  bibsource   = "http://w2.syronex.com/jmr/w3c-biblio",
  type        = "{W3C} Note",
  institution = "W3C",
}