Terry E. Tullis.
  <b>Rock friction and its implications for earthquake prediction
  examined via models of Parkfield earthquakes</b>.
  In <i>Proc. Natl. Acad. Sci. USA</i>, pages 3803-3810, April 1996.
  <A HREF="http://vis.cs.brown.edu/results/bibtex/Tullis-1996-RFA.bib">(bibtex:
  Tullis-1996-RFA)</A>.<br />