Prof. Genz allows redistribution of his code:
% Copyright (C) 2013, Alan Genz, All rights reserved.
%
% Redistribution and use in source and binary forms, with or without
% modification, are permitted provided the following conditions are met:
% 1. Redistributions of source code must retain the above copyright
% notice, this list of conditions and the following disclaimer.
% 2. Redistributions in binary form must reproduce the above copyright
% notice, this list of conditions and the following disclaimer in
% the documentation and/or other materials provided with the
% distribution.
% 3. The contributor name(s) may not be used to endorse or promote
% products derived from this software without specific prior
% written permission.