Irving Biederman.
 <b>Perceiving Real-World Scenes</b>.
 <em>Science</em>, 177(7):77--80, July 1972.
  <a href="http://vis.cs.brown.edu/docs/pdf/bib/g/Biederman-1972-PRS.pdf.html">(pdf)</a>
  <a href="http://vis.cs.brown.edu/results/bibtex/Biederman-1972-PRS.bib">(bibtex:
  Biederman-1972-PRS)</a>.