From ff8ed9124d1312e83141fb18644857ac208f2449 Mon Sep 17 00:00:00 2001
From: jzmaddock <john@johnmaddock.co.uk>
Date: Thu, 23 Feb 2017 10:40:45 +0000
Subject: [PATCH] Fix broken links in docs.

---
 doc/further_info.qbk | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/doc/further_info.qbk b/doc/further_info.qbk
index 08c5d0ff..fb649743 100644
--- a/doc/further_info.qbk
+++ b/doc/further_info.qbk
@@ -8,9 +8,8 @@
 
 [section:futher References and Further Information]
 
-Short tutorials on regular expressions can be 
-[@http://etext.lib.virginia.edu/helpsheets/regex.html found here] and 
-[@http://www.linuxpcug.org/lessons/regexp.html here].
+The main Perl regular expression tutorial can be found [@http://perldoc.perl.org/perlretut.html here], 
+there's a much shorter summary of the main features [@https://www.cs.tut.fi/~jkorpela/perl/regexp.html here].
 
 The main book on regular expressions is 
 [@http://www.oreilly.com/catalog/regex/ Mastering Regular Expressions, published by O'Reilly].