Christopher G. Healey.
  <b>Choosing effective colours for data visualization</b>.
  In <i>Proceedings of IEEE Visualization'96</i>, San Francisco, CA,
  October 1996.
  <A HREF="http://vis.cs.brown.edu/docs/pdf/g/Healey-1996-CEC.pdf.html">(pdf)</A>
  <A HREF="http://vis.cs.brown.edu/results/bibtex/Healey-1996-CEC.bib">(bibtex:
  Healey-1996-CEC)</A>.<br />