Hiroshi Ishii and Brygg Ullmer.
  <b>Tangible Bits: Towards Seamless Interfaces between People,
  Bits and Atoms</b>.
  In <i>Proceedings of CHI</i>, pages 234-241, 1997.
  <A HREF="http://vis.cs.brown.edu/docs/pdf/bib/g/Ishii-1997-TBT.pdf.html">(pdf)</A>
  <A HREF="http://vis.cs.brown.edu/results/bibtex/Ishii-1997-TBT.bib">(bibtex:
  Ishii-1997-TBT)</A>.<br />