diff --git a/matlab/bfgsi.m b/matlab/bfgsi.m
index 1f6546477..0f3c1b426 100644
--- a/matlab/bfgsi.m
+++ b/matlab/bfgsi.m
@@ -4,6 +4,9 @@ function H = bfgsi(H0,dg,dx)
 % 6/8/93 version that updates inverse hessian instead of hessian
 % itself.
 
+% Original file downloaded from:
+% http://sims.princeton.edu/yftp/optimize/mfiles/bfgsi.m
+
 % Copyright (C) 1993-2007 Christopher Sims
 %
 % This file is part of Dynare.
diff --git a/matlab/bvar_density.m b/matlab/bvar_density.m
index a3699c225..e74bb57bb 100644
--- a/matlab/bvar_density.m
+++ b/matlab/bvar_density.m
@@ -61,6 +61,9 @@ function w = matrictint(S, df, XXi)
 %
 % (where k is the dimension of XXi and ny is the dimension of S and
 % Sigma)
+
+% Original file downloaded from:
+% http://sims.princeton.edu/yftp/VARtools/matlab/matrictint.m
     
     k=size(XXi,1);
     ny=size(S,1);
diff --git a/matlab/bvar_toolbox.m b/matlab/bvar_toolbox.m
index cd4c11527..6a0a4ddd4 100644
--- a/matlab/bvar_toolbox.m
+++ b/matlab/bvar_toolbox.m
@@ -181,7 +181,9 @@ function [ydum,xdum,breaks]=varprior(nv,nx,lags,mnprior,vprior)
 %                   prior mean generates larger prior variances for own than for cross-effects even in 
 %                   this formulation, but here there is no way to shrink toward a set of unconstrained 
 %                   univariate AR's.
-% Author: C. Sims
+
+% Original file downloaded from:
+% http://sims.princeton.edu/yftp/VARtools/matlab/varprior.m
 
     if ~isempty(mnprior)
         xdum = zeros(lags+1,nx,lags,nv);
@@ -247,7 +249,10 @@ function var=rfvar3(ydata,lags,xdata,breaks,lambda,mu)
 %      repeating the initial xdata(lags+1,:) row or copying xdata(lags+1:2*lags,:) into 
 %      xdata(1:lags,:) are reasonable subsititutes.  These values are used in forming the
 %      persistence priors.
-% Code written by Christopher Sims.  This version 6/15/03.
+
+% Original file downloaded from:
+% http://sims.princeton.edu/yftp/VARtools/matlab/rfvar3.m
+
     [T,nvar] = size(ydata);
     nox = isempty(xdata);
     if ~nox
diff --git a/matlab/check.m b/matlab/check.m
index e1abd5351..2d1a5be1f 100644
--- a/matlab/check.m
+++ b/matlab/check.m
@@ -1,6 +1,4 @@
 function result = check
-
-
 % function result = check
 % checks determinacy conditions by computing the eigenvalues
 %
@@ -13,7 +11,7 @@ function result = check
 % SPECIAL REQUIREMENTS
 %    none
 
-% Copyright (C) 2001-2007 Dynare Team
+% Copyright (C) 2001-2008 Dynare Team
 %
 % This file is part of Dynare.
 %
diff --git a/matlab/csminit.m b/matlab/csminit.m
index d603a62ca..f018e9fcf 100644
--- a/matlab/csminit.m
+++ b/matlab/csminit.m
@@ -16,7 +16,11 @@ function [fhat,xhat,fcount,retcode] = csminit(fcn,x0,f0,g0,badg,H0,varargin)
 % Fixed 7/19/93 to flip eigenvalues of H to get better performance when
 % it's not psd.
 
+% Original file downloaded from:
+% http://sims.princeton.edu/yftp/optimize/mfiles/csminit.m
+
 % Copyright (C) 1993-2007 Christopher Sims
+% Copyright (C) 2008 Dynare Team
 %
 % This file is part of Dynare.
 %
diff --git a/matlab/csminwel.m b/matlab/csminwel.m
index 516c5e7dc..809d7314e 100644
--- a/matlab/csminwel.m
+++ b/matlab/csminwel.m
@@ -19,7 +19,11 @@ function [fh,xh,gh,H,itct,fcount,retcodeh] = csminwel(fcn,x0,H0,grad,crit,nit,me
 %        write g2.mat and g3.mat as well.  If all were written at about the same time, any of them
 %        may be a decent starting point.  One can also start from the one with best function value.)
 
+% Original file downloaded from:
+% http://sims.princeton.edu/yftp/optimize/mfiles/csminwel.m
+
 % Copyright (C) 1993-2007 Christopher Sims
+% Copyright (C) 2006-2008 Dynare Team
 %
 % This file is part of Dynare.
 %
diff --git a/matlab/csolve.m b/matlab/csolve.m
index 6a7dbf334..40be2d8db 100644
--- a/matlab/csolve.m
+++ b/matlab/csolve.m
@@ -18,7 +18,11 @@ function [x,rc] = csolve(FUN,x,gradfun,crit,itmax,varargin)
 %           in step length (very likely a numerical problem, or a discontinuity). 4 means itmax
 %           termination.
 
+% Original file downloaded from:
+% http://sims.princeton.edu/yftp/optimize/mfiles/csolve.m
+
 % Copyright (C) 1993-2007 Christopher Sims
+% Copyright (C) 2007 Dynare Team
 %
 % This file is part of Dynare.
 %
diff --git a/matlab/dgamma.m b/matlab/dgamma.m
deleted file mode 100644
index c94be4e8d..000000000
--- a/matlab/dgamma.m
+++ /dev/null
@@ -1,15 +0,0 @@
-function f = dgamma(x,a,b)
-%DGAMMA   The gamma density function
-%
-%         f = dgamma(x,a)
-
-%       Anders Holtsberg, 18-11-93
-%       Copyright (c) Anders Holtsberg
-
-if any(any(a<=0))
-   error('Parameter a is wrong')
-end
-
-f = (x./b) .^ (a-1) .* exp(-x./b) ./ (b.*gamma(a));
-I0 = find(x<0);
-f(I0) = zeros(size(I0));
diff --git a/matlab/dr11_sparse.m b/matlab/dr11_sparse.m
index 424b88fb4..7fddf48e7 100644
--- a/matlab/dr11_sparse.m
+++ b/matlab/dr11_sparse.m
@@ -1,4 +1,23 @@
 function [dr,info,M_,options_,oo_] = dr11_sparse(dr,task,M_,options_,oo_, jacobia_, hessian)
+%function [dr,info,M_,options_,oo_] = dr11_sparse(dr,task,M_,options_,oo_, jacobia_, hessian)
+
+% Copyright (C) 2008 Dynare Team
+%
+% This file is part of Dynare.
+%
+% Dynare 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.
+%
+% Dynare 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 Dynare.  If not, see <http://www.gnu.org/licenses/>.
+
     info = 0;
     klen = M_.maximum_endo_lag + M_.maximum_endo_lead + 1;
     kstate = dr.kstate;
diff --git a/matlab/independent_metropolis_hastings.m b/matlab/independent_metropolis_hastings.m
index ff32f17fc..7f74a813a 100644
--- a/matlab/independent_metropolis_hastings.m
+++ b/matlab/independent_metropolis_hastings.m
@@ -17,9 +17,24 @@ function independent_metropolis_hastings(TargetFun,ProposalFun,xparam1,vv,mh_bou
 %
 % SPECIAL REQUIREMENTS
 %   None.
-%  
-% part of DYNARE, copyright Dynare Team (2006-2008)
-% Gnu Public License.
+
+% Copyright (C) 2006-2008 Dynare Team
+%
+% This file is part of Dynare.
+%
+% Dynare 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.
+%
+% Dynare 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 Dynare.  If not, see <http://www.gnu.org/licenses/>.
+
 global M_ options_ bayestopt_
 %%%%
 %%%% Initialization of the independent metropolis-hastings chains.
diff --git a/matlab/model_info.m b/matlab/model_info.m
index 897e5b31b..f1f92c55b 100644
--- a/matlab/model_info.m
+++ b/matlab/model_info.m
@@ -1,4 +1,23 @@
 function model_info;
+%function model_info;
+
+% Copyright (C) 2008 Dynare Team
+%
+% This file is part of Dynare.
+%
+% Dynare 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.
+%
+% Dynare 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 Dynare.  If not, see <http://www.gnu.org/licenses/>.
+
  global M_;
  fprintf('                                          Informations about %s\n',M_.fname);
  fprintf(strcat('                                          ===================',char(ones(1,length(M_.fname))*'='),'\n\n'));
diff --git a/matlab/numgrad.m b/matlab/numgrad.m
index 317577e3d..b3c4f494a 100644
--- a/matlab/numgrad.m
+++ b/matlab/numgrad.m
@@ -1,7 +1,11 @@
 function [g, badg] = numgrad(fcn,x,varargin)
 % function [g badg] = numgrad(fcn,xvarargin)
 
+% Original file downloaded from:
+% http://sims.princeton.edu/yftp/optimize/mfiles/numgrad.m
+
 % Copyright (C) 1993-2007 Christopher Sims
+% Copyright (C) 2008 Dynare Team
 %
 % This file is part of Dynare.
 %
diff --git a/matlab/numgrad3.m b/matlab/numgrad3.m
index f79ab7f07..19f0ce941 100644
--- a/matlab/numgrad3.m
+++ b/matlab/numgrad3.m
@@ -7,6 +7,9 @@ function [g, badg, f0, f1, f2] = numgrad3(fcn,x,varargin)
 % See section 25.3.4 in Abramovitz and Stegun (1972, Tenth Printing, December) Handbook of Mathematical Functions.
 % http://www.math.sfu.ca/~cbm/aands/ 
 
+% Original file downloaded from:
+% http://sims.princeton.edu/yftp/optimize/mfiles/numgrad.m
+
 % Copyright (C) 1993-2007 Christopher Sims
 % Copyright (C) 2008 Dynare Team
 %
diff --git a/matlab/numgrad5.m b/matlab/numgrad5.m
index c93e0a0fd..0afe3f5bf 100644
--- a/matlab/numgrad5.m
+++ b/matlab/numgrad5.m
@@ -9,6 +9,9 @@ function [g, badg, f0, f1, f2, f3, f4] = numgrad5(fcn,x,varargin)
 %
 % TODO Try Four points formula when cost_flag3=0 or cost_flag4=0.
 
+% Original file downloaded from:
+% http://sims.princeton.edu/yftp/optimize/mfiles/numgrad.m
+
 % Copyright (C) 1993-2007 Christopher Sims
 % Copyright (C) 2008 Dynare Team
 %
diff --git a/matlab/qz/qzdiv.m b/matlab/qz/qzdiv.m
index 5f1a0fd95..eebe52a46 100644
--- a/matlab/qz/qzdiv.m
+++ b/matlab/qz/qzdiv.m
@@ -6,6 +6,9 @@ function [A,B,Q,Z] = qzdiv(stake,A,B,Q,Z)
 % corner, while preserving U.T. and orthonormal properties and Q'AZ' and
 % Q'BZ'.
 
+% Original file downloaded from:
+% http://sims.princeton.edu/yftp/gensys/mfiles/qzdiv.m
+
 % Copyright (C) 1993-2007 Christopher Sims
 %
 % This file is part of Dynare.
diff --git a/matlab/qz/qzswitch.m b/matlab/qz/qzswitch.m
index 72bf41574..f16d604cf 100644
--- a/matlab/qz/qzswitch.m
+++ b/matlab/qz/qzswitch.m
@@ -10,6 +10,9 @@ function [A,B,Q,Z] = qzswitch(i,A,B,Q,Z)
 % the qz transformation is not unique and it is not possible simply to switch
 % the positions of the diagonal elements of both A and B.
 
+% Original file downloaded from:
+% http://sims.princeton.edu/yftp/gensys/mfiles/qzswitch.m
+
 % Copyright (C) 1993-2007 Christopher Sims
 %
 % This file is part of Dynare.
diff --git a/matlab/resol.m b/matlab/resol.m
index 937d6e0d2..135baf8fd 100644
--- a/matlab/resol.m
+++ b/matlab/resol.m
@@ -1,5 +1,4 @@
 function [dr,info]=resol(ys,check_flag)
-
 % function [dr,info]=resol(ys,check_flag)
 % Computes first and second order approximations
 %
@@ -22,7 +21,7 @@ function [dr,info]=resol(ys,check_flag)
 % SPECIAL REQUIREMENTS
 %    none
 
-% Copyright (C) 2001-2007 Dynare Team
+% Copyright (C) 2001-2008 Dynare Team
 %
 % This file is part of Dynare.
 %
diff --git a/matlab/sim1.m b/matlab/sim1.m
index 6462e42b6..24fe7dcae 100644
--- a/matlab/sim1.m
+++ b/matlab/sim1.m
@@ -14,9 +14,8 @@ function sim1
 %
 % SPECIAL REQUIREMENTS
 %   None.
-%  
 
-% Copyright (C) 1996-2007 Dynare Team
+% Copyright (C) 1996-2008 Dynare Team
 %
 % This file is part of Dynare.
 %
diff --git a/matlab/steady.m b/matlab/steady.m
index 4272e0fc5..ed475145b 100644
--- a/matlab/steady.m
+++ b/matlab/steady.m
@@ -11,7 +11,7 @@ function steady()
 % SPECIAL REQUIREMENTS
 %   none
 
-% Copyright (C) 2001-2007 Dynare Team
+% Copyright (C) 2001-2008 Dynare Team
 %
 % This file is part of Dynare.
 %
diff --git a/matlab/transition_matrix.m b/matlab/transition_matrix.m
index 3894ae9e8..b3f8b7e97 100644
--- a/matlab/transition_matrix.m
+++ b/matlab/transition_matrix.m
@@ -1,5 +1,4 @@
 function [A,B] = transition_matrix(dr, varargin)
-
 % function [A,B] = transition_matrix(dr, varargin)
 % Makes transition matrices out of ghx and ghu
 %
@@ -14,7 +13,7 @@ function [A,B] = transition_matrix(dr, varargin)
 % SPECIAL REQUIREMENTS
 %    none
 
-% Copyright (C) 2003-2007 Dynare Team
+% Copyright (C) 2003-2008 Dynare Team
 %
 % This file is part of Dynare.
 %