A.K. Rana, J.M. Wardlaw, P.A. Armitage, and M.E. Bastin.
  <b>Apparent diffusion coefficient (ADC) measurements may be more
  reliable and reproducible than lesion volume on diffusion-weighted images
  from patients with acute ischaemic stroke&mdash;implications for study design</b>.
  <i>Magn Reson Imag</i>, 21(6):617-24, July 2003.
  <A HREF="http://vis.cs.brown.edu/results/bibtex/Rana-2003-ADC.bib">(bibtex:
  Rana-2003-ADC)</A>.<br />