Almir Olivette Artero and Maria Cristina Ferreira de Oliveira.
  <b>Uncovering Clusters in Crowded Parallel Coordinates
  Visualizations</b>.
  <i>IEEE Visualization</i>, 2004.
  <A HREF="http://vis.cs.brown.edu/docs/pdf/bib/g/Artero-2004-UCC.pdf.html">(pdf)</A>
  <A HREF="http://vis.cs.brown.edu/results/bibtex/Artero-2004-UCC.bib">(bibtex:
  Artero-2004-UCC)</A>.<br />