Gstat is free software; you can redistribute it and/or modify it under the terms of the GNU General Public Licenceas published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. Gstat 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 Licencealong with the program (see the file COPYING); if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
Meschach matrix library: Copyright 1993 David E. Stewart and Zbigniew Leyk
Gnuplot: Copyright 1986-1993, 1998 Thomas Williams and Colin Kelley
and others