diff --git a/doc/index.rst b/doc/index.rst
index bc56048364d39a632fb01c483fa2058f05a14484..70b824326f3854a026bb6971fc55dcd0a90d90eb 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -17,7 +17,7 @@ This package is part of the Bob_ toolkit and it allows to reproduce the experime
         booktitle = {TIFS 2019},
     }
 
-If you use this package and/or its results, please cite the paper.
+If you use this package and/or its results, please cite the paper [GMGNAM19]_.
 
 User guide
 ---------------------