Selan dos Santos and Ken Brodlie.
  <b>Gaining understanding of multivariate and multidimensional
  data through visualization </b>.
  <i>Computers and Graphics</i>, 28(3):311-325, June 2004.
  <A HREF="http://vis.cs.brown.edu/docs/pdf/bib/g/Santos-2004-GUM.pdf.html">(pdf)</A>
  <A HREF="http://vis.cs.brown.edu/results/bibtex/Santos-2004-GUM.bib">(bibtex:
  Santos-2004-GUM)</A>.<br />