DAvid J. Duke, Ken W. Brodlie, David A. Duce, and Ivan Herman.
  <b>Do You See What I Mean?</b>
  <i>IEEE Computer Graphics and Applications</i>, 25(3):6-9, May/June
  2005.
  <A HREF="http://vis.cs.brown.edu/docs/pdf/bib/g/Duke-2005-DYS.pdf.html">(pdf)</A>
  <A HREF="http://vis.cs.brown.edu/results/bibtex/Duke-2005-DYS.bib">(bibtex:
  Duke-2005-DYS)</A>.<br />