O. Coulon, D.C. Alexander, and S.R. Arridge.
  <b>Tensor Field Regularisation for DT-MR Images</b>.
  In <i>Proceedings of British Conference on Medical Image
  Understanding and Analysis</i>, 2001.
  <A HREF="http://vis.cs.brown.edu/docs/pdf/bib/g/Coulon-2001-TFR.pdf.html">(pdf)</A>
  <A HREF="http://vis.cs.brown.edu/results/bibtex/Coulon-2001-TFR.bib">(bibtex:
  Coulon-2001-TFR)</A>.<br />