[gimp] Added URL to document referenced in comment block at top of file.

[Kevin Cozens <kcozens src gnome org>]

commit 73f9f652bcc3e60ff39df862d2775d88eaf5e5eb
Author: Kevin Cozens <kcozens cvs gnome org>
Date:   Sun Jan 2 01:46:58 2011 -0500

    Added URL to document referenced in comment block at top of file.

 plug-ins/common/van-gogh-lic.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/plug-ins/common/van-gogh-lic.c b/plug-ins/common/van-gogh-lic.c
index 98353b1..5ece520 100644
--- a/plug-ins/common/van-gogh-lic.c
+++ b/plug-ins/common/van-gogh-lic.c
@@ -29,8 +29,10 @@
  * This plug-in implements the Line Integral Convolution (LIC) as described in
  * Cabral et al. "Imaging vector fields using line integral convolution" in the
  * Proceedings of ACM SIGGRAPH 93. Publ. by ACM, New York, NY, USA. p. 263-270.
- * Some of the code is based on code by Steinar Haugen (thanks!), the Perlin
+ * (See http://www8.cs.umu.se/kurser/TDBD13/VT00/extra/p263-cabral.pdf)
  * noise function is practically ripped as is :)
+ *
+ * Some of the code is based on code by Steinar Haugen (thanks!), the Perlin
  */
 
 #include "config.h"