David H. Laidlaw, Michael Kirby, J. Scott Davidson, Timothy Miller, Marco
  DaSilva, William Warren, and Michael Tarr.
  <b>Quantitative Comparative Evaluation of 2D Vector Field
  Visualization Methods</b>.
  In <i>Proceedings of IEEE Visualization 2001</i>, pages 143-150.
  IEEE, October 2001.<br />