License policy of my (A. Schloegl) software 
Copyright (C) 1995-2001 by Alois Schloegl  

You can redistribute the software and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. 

The software 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 with this distribution; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 

You are encouraged to redistribute my software under the GNU General Public License, but you should REFRAIN FROM DISTRIBUTING MODIFIED VERSIONS of the library. This is especially important for numerical algorithms, library interfaces and for tools. Experience shows that hot `bug fixes' and `improvements' often have severe side effects or implications for correctness and integrity in circumstances other users may rely on. If you have bug fixes, improvements, new algorithms, or updates for the online documentation, please send your suggestion to the author. I will include bug fixes and contributions in the next distribution. 

If you would like to do something that this copyright prohibits (such as distributing it with a commercial product, using portions of the source in some commercial program), please contact the author (preferably via email). Arrangements can probably be worked out. If you find the software useful or of some value to you, your donation would be greatly appreciated.