H. Alt and M. Godau.
  <b>Computing the Frechet distance between two polygonal curves</b>.
  <i>International Journal of Computational Geometry and
  Applications</i>, 5:75-91, 1995.
  <A HREF="http://vis.cs.brown.edu/results/bibtex/Alt-1995-CFD.bib">(bibtex:
  Alt-1995-CFD)</A>.<br />