Ming Jiang, Raghu Machiraju, and David Thompson.
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  In <i>Proceedings of the conference on Visualization</i>, pages
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  <A HREF="http://vis.cs.brown.edu/docs/pdf/g/Jiang-2002-GVS.pdf.html">(pdf)</A>
  <A HREF="http://vis.cs.brown.edu/results/bibtex/Jiang-2002-GVS.bib">(bibtex:
  Jiang-2002-GVS)</A>.<br />