G. Robertson, M. Czerwinski, and M. van Dantzich.
 <b>Immersion in Desktop Virtual Reality</b>.
 In <em>Proceedings of UIST</em>, pages 11--19, 1997.
  <a href="http://vis.cs.brown.edu/docs/pdf/bib/g/Robertson-1997-IDV.pdf.html">(pdf)</a>
  <a href="http://vis.cs.brown.edu/results/bibtex/Robertson-1997-IDV.bib">(bibtex:
  Robertson-1997-IDV)</a>.