--- a/jmedcouple.c++
+++ b/jmedcouple.c++
@@ -1,3 +1,22 @@
+// jmedcouple.c++ ---
+
+// Copyright  © 2015 Jordi Gutiérrez Hermoso <jordigh@octave.org>
+
+// Author: Jordi Gutiérrez Hermoso
+
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 3
+// of the License, or (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+
 #include <vector>
 #include <limits>
 #include <iostream>