diff --git a/license.txt b/license.txt
index ef1197918..8acf069ff 100644
--- a/license.txt
+++ b/license.txt
@@ -340,3 +340,53 @@ License: GPL-2+
  You should have received a copy of the GNU General Public License
  along with this program.  If not, see
  <http://www.gnu.org/licenses/>.
+
+Files: ms-sbvar/utilities_dw/*
+Copyright: 1996-2011, Daniel Waggoner
+License: GPL-3+
+ This 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.
+ .
+ It 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.
+ .
+ If you did not received a copy of the GNU General Public License
+ with this software, see <http://www.gnu.org/licenses/>.
+
+Files: ms-sbvar/switch_dw/*
+Copyright: 1996-2011, Daniel Waggoner and Tao Zha
+License: GPL-3+
+ This 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.
+ .
+ It 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.
+ .
+ If you did not received a copy of the GNU General Public License
+ with this software, see <http://www.gnu.org/licenses/>.
+
+Files: ms-sbvar/switch_dw/state_space/sbvar/dw_csminwel.c,
+ state_space/sbvar/dw_csminwel.h
+Copyright: 1996, Christopher Sims
+           2003, Karibzhanov, Waggoner, and Zha
+License: GPL-3+
+ This 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.
+ .
+ It 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.
+ .
+ If you did not received a copy of the GNU General Public License
+ with this software, see <http://www.gnu.org/licenses/>.