Index: cdt.c
===================================================================
--- cdt.c	(revision 32652)
+++ cdt.c	(revision 32653)
@@ -1,11 +1,27 @@
 /*
- *  Copyright (C) 2018 Wojciech Krutnik
- *
- *  Constrained Delaunay Triangulation using incremental algorithm, as described in:
- *    Yizhi Lu and Wayne Wei-Ming Dai, "A numerical stable algorithm for constructing
- *    constrained Delaunay triangulation and application to multichip module layout,"
- *    China., 1991 International Conference on Circuits and Systems, Shenzhen, 1991,
- *    pp. 644-647 vol.2.
+    libcdtr - Constrained Delaunay Triangulation using incremental algorithm
+
+    Copyright (C) 2018 Wojciech Krutnik
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library 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
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+    Constrained Delaunay Triangulation using incremental algorithm, as described in:
+      Yizhi Lu and Wayne Wei-Ming Dai, "A numerical stable algorithm for constructing
+      constrained Delaunay triangulation and application to multichip module layout,"
+      China., 1991 International Conference on Circuits and Systems, Shenzhen, 1991,
+      pp. 644-647 vol.2.
  */
 
 #include <assert.h>
Index: cdt.h
===================================================================
--- cdt.h	(revision 32652)
+++ cdt.h	(revision 32653)
@@ -1,11 +1,28 @@
 /*
- *  Copyright (C) 2018 Wojciech Krutnik
- *
- *  Constrained Delaunay Triangulation using incremental algorithm, as described in:
- *    Yizhi Lu and Wayne Wei-Ming Dai, "A numerical stable algorithm for constructing
- *    constrained Delaunay triangulation and application to multichip module layout,"
- *    China., 1991 International Conference on Circuits and Systems, Shenzhen, 1991,
- *    pp. 644-647 vol.2.
+    libcdtr - Constrained Delaunay Triangulation using incremental algorithm
+
+    Copyright (C) 2018 Wojciech Krutnik
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library 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
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+
+    Constrained Delaunay Triangulation using incremental algorithm, as described in:
+      Yizhi Lu and Wayne Wei-Ming Dai, "A numerical stable algorithm for constructing
+      constrained Delaunay triangulation and application to multichip module layout,"
+      China., 1991 International Conference on Circuits and Systems, Shenzhen, 1991,
+      pp. 644-647 vol.2.
  */
 
 #ifndef CDT_H