Bonnell, Duchaineau, Schikore, Hamann, and Joy.
  <b>Material Interface Reconstruction</b>.
  <i>IEEE Transactions on Visualization and Computer Graphics</i>, 340,
  2003.
  <A HREF="http://vis.cs.brown.edu/docs/pdf/g/Bonnell-2003-MIR.pdf.html">(pdf)</A>
  <A HREF="http://vis.cs.brown.edu/results/bibtex/Bonnell-2003-MIR.bib">(bibtex:
  Bonnell-2003-MIR)</A>.<br />