# HG changeset patch
# User Christian Urban <christian dot urban at kcl dot ac dot uk>
# Date 1380043661 -3600
# Node ID d5fdb5c6248b51705ebd06ceb1d7826ea286c827
# Parent  84297c4b3727e435b84a94baa58f2dc8a3b02caa
added

diff -r 84297c4b3727 -r d5fdb5c6248b bsc-projects-13.html
--- a/bsc-projects-13.html	Mon Sep 23 01:54:12 2013 +0100
+++ b/bsc-projects-13.html	Tue Sep 24 18:27:41 2013 +0100
@@ -105,7 +105,7 @@
   about the problem much longer than a single afternoon. The task 
   in this project is to find out how good they actually are by implementing the results from their paper. 
   Their approach is based on the concept of partial derivatives introduced in 1994 by
-  <A HREF="http://reference.kfupm.edu.sa/content/p/a/partial_derivatives_of_regular_expressio_1319383.pdf">Valentin Antimirov</A>.
+  <A HREF="http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.56.2509&rep=rep1&type=pdf">Valentin Antimirov</A>.
   I used them once myself in a <A HREF="http://www.inf.kcl.ac.uk/staff/urbanc/Publications/rexp.pdf">paper</A> 
   in order to prove the <A HREF="http://en.wikipedia.org/wiki/Myhill–Nerode_theorem">Myhill-Nerode theorem</A>.
   So I know they are worth their money. Still, it would be interesting to actually compare their results