O. Coulon, D.C. Alexander, and S. Arridge.
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  <i>Medical Image Analysis</i>, 8:47-67, 2004.
  <A HREF="http://vis.cs.brown.edu/docs/pdf/bib/g/Coulon-2004-DTM.pdf.html">(pdf)</A>
  <A HREF="http://vis.cs.brown.edu/results/bibtex/Coulon-2004-DTM.bib">(bibtex:
  Coulon-2004-DTM)</A>.<br />