Gunter Meinhardt and Malte Persike.
  <b>Strength of Feature Contrast Mediates Interaction among
  Feature Domains</b>.
  <i>Spatial Vision</i>, 16(5):459-478, 2003.
  <A HREF="http://vis.cs.brown.edu/docs/pdf/bib/g/Meinhardt-2003-SFC.pdf.html">(pdf)</A>
  <A HREF="http://vis.cs.brown.edu/results/bibtex/Meinhardt-2003-SFC.bib">(bibtex:
  Meinhardt-2003-SFC)</A>.<br />