diff --git a/cmake b/cmake
index 756930f636b06f0ac06dbdd1f9177993e0dd9266..dd3e4127f2b223496859fe05be02726e9d1a071b 160000
--- a/cmake
+++ b/cmake
@@ -1 +1 @@
-Subproject commit 756930f636b06f0ac06dbdd1f9177993e0dd9266
+Subproject commit dd3e4127f2b223496859fe05be02726e9d1a071b
diff --git a/include/eigenpy/solvers/BFGSPreconditioners.hpp b/include/eigenpy/solvers/BFGSPreconditioners.hpp
index d0cde6cc2fdf0a1f908f13509cc2d5c0dccf4091..2fd36833994863299e366aee7e4cd7c731143bc6 100644
--- a/include/eigenpy/solvers/BFGSPreconditioners.hpp
+++ b/include/eigenpy/solvers/BFGSPreconditioners.hpp
@@ -1,17 +1,5 @@
 /*
- * Copyright 2017, Justin Carpentier, LAAS-CNRS
- *
- * This file is part of eigenpy.
- * eigenpy 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 3 of
- * the License, or (at your option) any later version.
- * eigenpy 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 eigenpy.  If not, see <http://www.gnu.org/licenses/>.
+ * Copyright 2017 CNRS
  */
 
 #ifndef __eigenpy_bfgs_preconditioners_hpp__
diff --git a/include/eigenpy/solvers/BasicPreconditioners.hpp b/include/eigenpy/solvers/BasicPreconditioners.hpp
index ae2b98274879cbbcd52b32af852fe64214cfc4de..d74ee3f225e89ec8b89c611bfa54fa181e3ef25a 100644
--- a/include/eigenpy/solvers/BasicPreconditioners.hpp
+++ b/include/eigenpy/solvers/BasicPreconditioners.hpp
@@ -1,17 +1,5 @@
 /*
- * Copyright 2017, Justin Carpentier, LAAS-CNRS
- *
- * This file is part of eigenpy.
- * eigenpy 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 3 of
- * the License, or (at your option) any later version.
- * eigenpy 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 eigenpy.  If not, see <http://www.gnu.org/licenses/>.
+ * Copyright 2017 CNRS
  */
 
 #ifndef __eigenpy_basic_preconditioners_hpp__
diff --git a/include/eigenpy/solvers/ConjugateGradient.hpp b/include/eigenpy/solvers/ConjugateGradient.hpp
index 0d291b22d700071c206582546f98a26740cc644a..6f41e9d788c0136452352a8b224a105aa0982ded 100644
--- a/include/eigenpy/solvers/ConjugateGradient.hpp
+++ b/include/eigenpy/solvers/ConjugateGradient.hpp
@@ -1,17 +1,5 @@
 /*
- * Copyright 2017, Justin Carpentier, LAAS-CNRS
- *
- * This file is part of eigenpy.
- * eigenpy 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 3 of
- * the License, or (at your option) any later version.
- * eigenpy 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 eigenpy.  If not, see <http://www.gnu.org/licenses/>.
+ * Copyright 2017 CNRS
  */
 
 #ifndef __eigenpy_conjugate_gradient_hpp__
diff --git a/include/eigenpy/solvers/IterativeSolverBase.hpp b/include/eigenpy/solvers/IterativeSolverBase.hpp
index 7bbdcb36c1145b9528d11859903208de4637f902..561a5ab8923d7c5caa1a840372ad0dc95fdc7b57 100644
--- a/include/eigenpy/solvers/IterativeSolverBase.hpp
+++ b/include/eigenpy/solvers/IterativeSolverBase.hpp
@@ -1,17 +1,5 @@
 /*
- * Copyright 2017, Justin Carpentier, LAAS-CNRS
- *
- * This file is part of eigenpy.
- * eigenpy 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 3 of
- * the License, or (at your option) any later version.
- * eigenpy 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 eigenpy.  If not, see <http://www.gnu.org/licenses/>.
+ * Copyright 2017 CNRS
  */
 
 #ifndef __eigenpy_iterative_solver_base_hpp__
diff --git a/include/eigenpy/solvers/LeastSquaresConjugateGradient.hpp b/include/eigenpy/solvers/LeastSquaresConjugateGradient.hpp
index a84a737844d2c08920ac023dc5cf56bed69195e4..3107270e0eb4d127057c46fd37af0a07e8c93511 100644
--- a/include/eigenpy/solvers/LeastSquaresConjugateGradient.hpp
+++ b/include/eigenpy/solvers/LeastSquaresConjugateGradient.hpp
@@ -1,17 +1,5 @@
 /*
- * Copyright 2017-2018, Justin Carpentier, LAAS-CNRS
- *
- * This file is part of eigenpy.
- * eigenpy 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 3 of
- * the License, or (at your option) any later version.
- * eigenpy 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 eigenpy.  If not, see <http://www.gnu.org/licenses/>.
+ * Copyright 2017-2018 CNRS
  */
 
 #ifndef __eigenpy_least_square_conjugate_gradient_hpp__
diff --git a/include/eigenpy/solvers/SparseSolverBase.hpp b/include/eigenpy/solvers/SparseSolverBase.hpp
index cf1ad620a3594dc529c8ca06a532dcf5751a57d4..9874be789e5dfee5d16203a18003d14152a3e100 100644
--- a/include/eigenpy/solvers/SparseSolverBase.hpp
+++ b/include/eigenpy/solvers/SparseSolverBase.hpp
@@ -1,17 +1,5 @@
 /*
- * Copyright 2017, Justin Carpentier, LAAS-CNRS
- *
- * This file is part of eigenpy.
- * eigenpy 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 3 of
- * the License, or (at your option) any later version.
- * eigenpy 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 eigenpy.  If not, see <http://www.gnu.org/licenses/>.
+ * Copyright 2017 CNRS
  */
 
 #ifndef __eigenpy_sparse_solver_base_hpp__
diff --git a/include/eigenpy/solvers/preconditioners.hpp b/include/eigenpy/solvers/preconditioners.hpp
index 18cb4c7ae67e06aa42151ea1d39624b9003adf83..3e26638ba2ee37be0d009a4421f77c7939c89ff9 100644
--- a/include/eigenpy/solvers/preconditioners.hpp
+++ b/include/eigenpy/solvers/preconditioners.hpp
@@ -1,17 +1,5 @@
 /*
- * Copyright 2017, Justin Carpentier, LAAS-CNRS
- *
- * This file is part of eigenpy.
- * eigenpy 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 3 of
- * the License, or (at your option) any later version.
- * eigenpy 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 eigenpy.  If not, see <http://www.gnu.org/licenses/>.
+ * Copyright 2017 CNRS
  */
 
 #ifndef __eigenpy_preconditioners_hpp__
diff --git a/src/solvers/preconditioners.cpp b/src/solvers/preconditioners.cpp
index c91ed913b4e641101a8c001c0bdde3f0a2791e92..29cf55b641bba392187b29ad39ade5ba64a4d06a 100644
--- a/src/solvers/preconditioners.cpp
+++ b/src/solvers/preconditioners.cpp
@@ -1,17 +1,5 @@
 /*
- * Copyright 2017-2018, Justin Carpentier, LAAS-CNRS
- *
- * This file is part of eigenpy.
- * eigenpy 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 3 of
- * the License, or (at your option) any later version.
- * eigenpy 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 eigenpy.  If not, see <http://www.gnu.org/licenses/>.
+ * Copyright 2017 CNRS
  */
 
 #include <Eigen/Core>