A. Brun, M. Bjornemo, R. Kikinis, and C.-F. Westin.
  <b>White Matter Tractography Using Sequential Importance
  Sampling</b>.
  In <i>ISMRM 2002</i>, page 1131, 2002.
  <A HREF="http://vis.cs.brown.edu/docs/pdf/bib/g/Brun-2002-WMT.pdf.html">(pdf)</A>
  <A HREF="http://vis.cs.brown.edu/results/bibtex/Brun-2002-WMT.bib">(bibtex:
  Brun-2002-WMT)</A>.<br />