diff --git a/dfs.c b/dfs.c
index 30aaa3a9e..3debd0e27 100644
--- a/dfs.c
+++ b/dfs.c
@@ -1,13 +1,23 @@
-/*======================================================================
+/*
+  Copyright 2010 SINTEF ICT, Applied Mathematics.
 
-  File: dfs.c
+  This file is part of the Open Porous Media project (OPM).
 
-  Created: Tue May  6 09:27:26 2008
+  OPM 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.
+
+  OPM 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 OPM.  If not, see <http://www.gnu.org/licenses/>.
+*/
 
-  Author: Jostein R. Natvig <Jostein.R.Natvig@sintef.no>
 
-  Revision: $Id$
-  ====================================================================*/
 #include <assert.h>
 
 #include "dfs.h"
diff --git a/dfs.h b/dfs.h
index 6982f97ff..e2a925ba6 100644
--- a/dfs.h
+++ b/dfs.h
@@ -1,4 +1,25 @@
+/*
+  Copyright 2010 SINTEF ICT, Applied Mathematics.
+
+  This file is part of the Open Porous Media project (OPM).
+
+  OPM 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.
+
+  OPM 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 OPM.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #ifndef DFS_H_INCLUDED
 #define DFS_H_INCLUDED
+
 void dfs (int size, int *ia, int *ja, int *ncolors, int *color, int* work);
+
 #endif
diff --git a/flow_bc.h b/flow_bc.h
index 90d3eaa53..30430a036 100644
--- a/flow_bc.h
+++ b/flow_bc.h
@@ -1,3 +1,22 @@
+/*
+  Copyright 2010 SINTEF ICT, Applied Mathematics.
+
+  This file is part of the Open Porous Media project (OPM).
+
+  OPM 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.
+
+  OPM 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 OPM.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #ifndef FLOW_BC_H_INCLUDED
 #define FLOW_BC_H_INCLUDED
 
diff --git a/mimetic.c b/mimetic.c
index 0c4295245..48e3a0d3b 100644
--- a/mimetic.c
+++ b/mimetic.c
@@ -1,6 +1,21 @@
 /*
- * Copyright (c) 2010 SINTEF ICT, Applied Mathematics
- */
+  Copyright 2010 SINTEF ICT, Applied Mathematics.
+
+  This file is part of the Open Porous Media project (OPM).
+
+  OPM 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.
+
+  OPM 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 OPM.  If not, see <http://www.gnu.org/licenses/>.
+*/
 
 #include <assert.h>
 #include <stddef.h>
diff --git a/mimetic.h b/mimetic.h
index 04ec5a32f..1b73aa1cc 100644
--- a/mimetic.h
+++ b/mimetic.h
@@ -1,6 +1,21 @@
 /*
- * Copyright (c) 2010 SINTEF ICT, Applied Mathematics
- */
+  Copyright 2010 SINTEF ICT, Applied Mathematics.
+
+  This file is part of the Open Porous Media project (OPM).
+
+  OPM 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.
+
+  OPM 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 OPM.  If not, see <http://www.gnu.org/licenses/>.
+*/
 
 #ifndef MIMETIC_H_INCLUDED
 #define MIMETIC_H_INCLUDED
diff --git a/partition.c b/partition.c
index 355e666dd..33b247863 100644
--- a/partition.c
+++ b/partition.c
@@ -1,6 +1,21 @@
 /*
- * Copyright (c) 2010 SINTEF ICT, Applied Mathematics
- */
+  Copyright 2010 SINTEF ICT, Applied Mathematics.
+
+  This file is part of the Open Porous Media project (OPM).
+
+  OPM 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.
+
+  OPM 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 OPM.  If not, see <http://www.gnu.org/licenses/>.
+*/
 
 #include <assert.h>
 #include <stddef.h>
diff --git a/partition.h b/partition.h
index 8b951894e..0ccf3e592 100644
--- a/partition.h
+++ b/partition.h
@@ -1,6 +1,21 @@
 /*
- * Copyright (c) 2010 SINTEF ICT, Applied Mathematics
- */
+  Copyright 2010 SINTEF ICT, Applied Mathematics.
+
+  This file is part of the Open Porous Media project (OPM).
+
+  OPM 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.
+
+  OPM 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 OPM.  If not, see <http://www.gnu.org/licenses/>.
+*/
 
 #ifndef PARTITION_H_INCLUDED
 #define PARTITION_H_INCLUDED
diff --git a/sparse_sys.c b/sparse_sys.c
index 26691a613..7d48f06dc 100644
--- a/sparse_sys.c
+++ b/sparse_sys.c
@@ -1,3 +1,22 @@
+/*
+  Copyright 2010 SINTEF ICT, Applied Mathematics.
+
+  This file is part of the Open Porous Media project (OPM).
+
+  OPM 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.
+
+  OPM 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 OPM.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #include <assert.h>
 #include <stdlib.h>
 
diff --git a/sparse_sys.h b/sparse_sys.h
index 1671a79d4..e9b9d75de 100644
--- a/sparse_sys.h
+++ b/sparse_sys.h
@@ -1,3 +1,22 @@
+/*
+  Copyright 2010 SINTEF ICT, Applied Mathematics.
+
+  This file is part of the Open Porous Media project (OPM).
+
+  OPM 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.
+
+  OPM 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 OPM.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #ifndef SPARSE_SYS_H_INCLUDED
 #define SPARSE_SYS_H_INCLUDED
 
diff --git a/well.h b/well.h
index 40ed65e80..f2e3ceeae 100644
--- a/well.h
+++ b/well.h
@@ -1,3 +1,22 @@
+/*
+  Copyright 2010 SINTEF ICT, Applied Mathematics.
+
+  This file is part of the Open Porous Media project (OPM).
+
+  OPM 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.
+
+  OPM 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 OPM.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 #ifndef WELL_H_INCLUDED
 #define WELL_H_INCLUDED