Steven R. Gomez and David H. Laidlaw.
  <b>Modeling Human Performance from Visualization Interaction
  Histories</b>.
  In <i>Proceedings of IEEE InfoVis (Posters)</i>, 2011.
  <A HREF="http://vis.cs.brown.edu/docs/pdf/g/Gomez-2011-MHP.pdf.html">(pdf)</A>
  <A HREF="http://vis.cs.brown.edu/results/bibtex/Gomez-2011-MHP.bib">(bibtex:
  Gomez-2011-MHP)</A>.<br />