--- a/handouts/ho03.tex	Fri Apr 17 04:56:30 2015 +0100
+++ b/handouts/ho03.tex	Fri May 01 19:19:31 2015 +0100
@@ -857,6 +857,8 @@
 
 Compare what a human expert would create for $a (b + c)^*$ and
 what the Thomson algorithm.
+
+%http://www.inf.ed.ac.uk/teaching/courses/ct/
 \end{document}
 
 %%% Local Variables: