Here is another way (which works by removing the text it extracted):

$out = "";
while ($data =~ s#(<lt=c24>)(\w{3} ?)(.*?)(<jtitle>.*?</jtitle>)#$1$3#
+is) { 
  $out .= $2. " " . $4 . "\n"; 
}
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Written as a one-liner this gives:

perl -p0 -e '$x="";while (s#(<lt=c24>)(\w{3} ?)(.*?)(<jtitle>.*?</jtit
+le>)#$1$3#is) { $x.=$2." ".$4."\n"; } } $_ = $x; {' data
[download]