<?xml version="1.0" encoding="UTF-8"?>
<references>
<reference>
  <a1>Walsh, Nancy</a1>
  <t1>Learning Perl/Tk</t1>
  <t2/>
  <sn>1565923146</sn>
  <op/>
  <vo/>
  <ab/>
  <la>eng</la>
  <k1>Perl;
                Tk extension;
                computer programming language;
                graphical interfaces;
                </k1>
  <pb>O'Reilly</pb>
  <pp>Cambridge</pp>
  <yr>1999</yr>
  <ed/>
  <ul>https://learning.oreilly.com/library/view/-/1565923146/?ar;
	http://cds.cern.ch/record/384830/files/1565923146_TOC.pdf;
	</ul>
  <no>Imported from Invenio.</no>
</reference>

<reference>
  <a1>Wall, Larry</a1>
  <a2>Christiansen, Tom</a2>
  <a2>Schwartz, Randal L</a2>
  <t1>Programming Perl</t1>
  <t2/>
  <sn>1565921496</sn>
  <op/>
  <vo/>
  <ab/>
  <la>eng</la>
  <k1>Perl library;
                functions;
                manual;
                object classes;
                portable programming language;
                </k1>
  <pb>O'Reilly</pb>
  <pp>Bonn</pp>
  <yr>1996</yr>
  <ed>2nd ed.</ed>
  <ul/>
  <no>Imported from Invenio.</no>
</reference>

<reference>
  <t1/>
  <t2/>
  <sn/>
  <op/>
  <vo/>
  <ab/>
  <la/>
  <k1/>
  <pb/>
  <pp/>
  <yr/>
  <ed/>
  <ul/>
  <no>Imported from Invenio.</no>
</reference>

<reference>
  <a1>Arthur, Lowell Jay</a1>
  <a2>Burns, Edward N</a2>
  <t1>UNIX Shell Programming</t1>
  <t2/>
  <sn>0471599417</sn>
  <op/>
  <vo/>
  <ab/>
  <la>eng</la>
  <k1>UNIX shells;
                UNIX;
                </k1>
  <pb>Wiley</pb>
  <pp>New York, NY</pp>
  <yr>1994</yr>
  <ed>3rd ed.</ed>
  <ul/>
  <no>Imported from Invenio.</no>
</reference>

<reference>
  <a1>Christiansen, Tom</a1>
  <a2>Torkington, Nathan</a2>
  <t1>Perl cookbook</t1>
  <t2/>
  <sn>1565922433</sn>
  <op/>
  <vo/>
  <ab/>
  <la>eng</la>
  <k1>computer programming language;
                </k1>
  <pb>O'Reilly</pb>
  <pp>Beijing</pp>
  <yr>1998</yr>
  <ed>1st ed.</ed>
  <ul>https://learning.oreilly.com/library/view/-/1565922433/?ar;
	</ul>
  <no>Imported from Invenio.</no>
</reference>


</references>