Denis Le Bihan, Jean-Francois Mangin, Cyril Poupon, Chris A. Clark, Sabina
  Pappata, Nicolas Molko, and Hughes Chabriat.
  <b>Diffusion Tensor Imaging: Concepts and Applications</b>.
  <i>JOURNAL OF MAGNETIC RESONANCE IMAGING</i>, 13:534-546, 2001.<br />