D.A. Keim and H.P. Kriegel.
  <b>Possibilities and Limits in Visualizing Large Amounts of
  Multidimensional Data</b>.
  In <i>Proceedings of International Workshop on Perceptual Issues in
  Visualization</i>, 1993.
  <A HREF="http://vis.cs.brown.edu/docs/pdf/bib/g/Keim-1993-PLV.pdf.html">(pdf)</A>
  <A HREF="http://vis.cs.brown.edu/results/bibtex/Keim-1993-PLV.bib">(bibtex:
  Keim-1993-PLV)</A>.<br />