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<a name="Additional-Reading"></a>
<h2 class="chapter">25 Additional Reading</h2>

<p>You may wish to read more about the following programs:
</p><ul>
<li> lex
</li><li> yacc
</li><li> sed
</li><li> awk
</li></ul>

<p>The following books may contain material of interest:
</p>
<p>John Levine, Tony Mason, and Doug Brown,
<em>Lex &amp; Yacc</em>,
O&rsquo;Reilly and Associates.  Be sure to get the 2nd edition.
</p>
<p>M. E. Lesk and E. Schmidt,
<em>LEX &ndash; Lexical Analyzer Generator</em>
</p>
<p>Alfred Aho, Ravi Sethi and Jeffrey Ullman, <em>Compilers: Principles,
Techniques and Tools</em>, Addison-Wesley (1986).  Describes the
pattern-matching techniques used by <code>flex</code> (deterministic finite
automata).
</p>



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