Lawrence K. Saul and Sam T. Roweis.
  <b>Think globally, fit locally: unsupervised learning of low
  dimensional manifolds</b>.
  <i>J. Mach. Learn. Res.</i>, 4(1):119-155, March 2003.
  <A HREF="http://vis.cs.brown.edu/docs/pdf/bib/g/Saul-2003-TGF.pdf.html">(pdf)</A>
  <A HREF="http://vis.cs.brown.edu/results/bibtex/Saul-2003-TGF.bib">(bibtex:
  Saul-2003-TGF)</A>.<br />