Ghislain Picard, T. Le Toan, and S. Quegan.
  <b>A Three-dimensional Radiative Transfer Model to Interpret
  Ranging Scatterometer Measurements from a Pine Forest</b>.
  <i>Waves Random Media</i>, 14:S317-S331, 2004.
  <A HREF="http://vis.cs.brown.edu/results/bibtex/Picard-2004-TDR.bib">(bibtex:
  Picard-2004-TDR)</A>.<br />