NSF.
  <b>Review for Computer Graphics Tools for Understanding
  Tensor-Valued Volume Data: A Painting Metaphor</b>.
  Unpublished
  <A HREF="http://vis.cs.brown.edu/docs/pdf/bib/g/NSF-1996-CGT.pdf.html">(pdf)</A>
  <A HREF="http://vis.cs.brown.edu/results/bibtex/NSF-1996-CGT.bib">(bibtex:
  NSF-1996-CGT)</A>, 1996.<br />