--- a/index.rst	Wed Mar 09 21:24:05 2016 +0200
+++ b/index.rst	Wed Mar 09 21:26:17 2016 +0200
@@ -14,3 +14,13 @@
 
 Public domain. Do whatever you want.
 
+Sources
+=======
+
+Notes written in reStructuredText with a help of `math` directive.
+
+Visit http://hg.defun.work/stat/ to browser sources online or clone repository
+to build yourself::
+
+  $ hg clone http://hg.defun.work/stat/
+