diff --git a/12/README.md b/12/README.md
index 030827c..497b1ec 100644
--- a/12/README.md
+++ b/12/README.md
@@ -50,8 +50,12 @@ This fine level of fragmentation is what we are interested. ...
 
 ## Using Fractal Braownian Motion
 
+http://www.iquilezles.org/www/articles/morenoise/morenoise.htm
+
 http://www.iquilezles.org/www/articles/warp/warp.htm
 
+http://www.iquilezles.org/www/articles/dynclouds/dynclouds.htm
+
 <div class="codeAndCanvas" data="clouds.frag"></div>
 
 great!