This is the Debian packaged version of "mt-st" as found on:
  ftp://ftp.ibiblio.org/pub/linux/system/backup/

Copyright for mt-st source (except qic117.h and mtio.h):
    Copyright (C) 1996-2008 Kai Mäkisara <Kai.Makisara@kolumbus.fi>

Copyright for qic117.h:
    Copyright (C) 1993-1996 Bas Laarhoven,
              (C) 1997      Claus-Justus Heine.

Copyright for mtio.h (modified copy of <sys/mtio.h>):
    Copyright (C) 1996-1997 Free Software Foundation, Inc.
    Copyright (C) 2007      Kai Mäkisara <Kai.Makisara@kolumbus.fi>

License:
    This program 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 2 of the License, or
    (at your option) any later version.

    This program 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 this program; if not, write to the Free Software Foundation, Inc.,
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.


Packaging Copyright:
    Copyright (C) 2001,2004 Philippe Troin <phil@fifi.org>
                  2006-2008 Jan Christoph Nordholz
                            <hesso@pool.math.tu-berlin.de>
                  2014      Iustin Pop <iustin@debian.org>

Packaging License:
    GNU General Public License version 2.


On Debian GNU/Linux systems, the complete text of the GNU General Public
License, version 2, can be found in "/usr/share/common-licenses/GPL-2".