diff --git a/cours.tex b/cours.tex
index 8dcb6792a61d476e70540d8d50cbe764b7863f2e..0623d4c9a7a9b0adbb385ac6598dee53b87b9ca1 100644
--- a/cours.tex
+++ b/cours.tex
@@ -1,3 +1,11 @@
++% Copyright (C)  2016  Orestis Malaspinas.
++%     Permission is granted to copy, distribute and/or modify this document
++%     under the terms of the GNU Free Documentation License, Version 1.3
++%     or any later version published by the Free Software Foundation;
++%     with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
++%     A copy of the license can be downloaded from:
++%     https://www.gnu.org/licenses/fdl.html.
+
 \documentclass[a4paper,12pt]{book}
 \usepackage[utf8]{inputenc}
 \usepackage[french]{babel}