Song Zhang, Stephen Correia, and David H. Laidlaw.
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  automated proximity-based fiber-clustering method</b>.
  <i>IEEE</i>, 2007.
  <A HREF="http://vis.cs.brown.edu/docs/pdf/g/Zhang-2007-IWM.pdf.html">(pdf)</A>
  <A HREF="http://vis.cs.brown.edu/results/bibtex/Zhang-2007-IWM.bib">(bibtex:
  Zhang-2007-IWM)</A>.<br />