D.S. Tuch, T.G. Reese, M.R. Wiegell, N. Makris, J.W. Belliveau, and V.J.
  Wedeen.
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  white matter fiber heterogeneity</b>.
  <i>Magnetic Resonance in Medicine</i>, 48(4):577-582, October 2002.
  <A HREF="http://vis.cs.brown.edu/docs/pdf/bib/g/Tuch-2002-HAR.pdf.html">(pdf)</A>
  <A HREF="http://vis.cs.brown.edu/results/bibtex/Tuch-2002-HAR.bib">(bibtex:
  Tuch-2002-HAR)</A>.<br />