Ronald J. Brachman, Deborah L. McGuinness, Peter F. Patel-Schmeider, Lori A.
  Resnick, and Alexander Borgida.
  <b>Living with CLASSIC: When and How to Use a KL-ONE-Like
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  In <i>Principles of Semantic Networks: Explorations in the
  Representation of Knowledge</i>, pages 401-456. Morgan Kaufmann Publishers, San
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  <A HREF="http://vis.cs.brown.edu/docs/pdf/bib/g/Brachman-1991-LWC.pdf.html">(pdf)</A> <A HREF="http://vis.cs.brown.edu/results/bibtex/Brachman-1991-LWC.bib">(bibtex:
  Brachman-1991-LWC)</A>.<br />