H. Wainer and D. Thissen.
  <i><b>A Handbook for Data Analysis in the Behavioral Sciences:
  Statistical Issues</b></i>, chapter Graphical data analysis, pages 391-458.
  Erlbaum, 1993.
  <A HREF="http://vis.cs.brown.edu/results/bibtex/Wainer-1993-GDA.bib">(bibtex:
  Wainer-1993-GDA)</A>.<br />