Please refer to /usr/share/common-licenses/LGPL-2
for the full license text. 

GL2PS License as published by Christophe Geuzaine, 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 either
the GNU Library General Public License or the GL2PS License for
more details.

You should have received a copy of the GNU Library General Public
License along with this library in the file named "COPYING.LGPL";
if not, write to the Free Software Foundation, Inc., 51 Franklin
Street, Fifth Floor, Boston, MA 02110-1301, USA.

You should have received a copy of the GL2PS License with this
library in the file named "COPYING.GL2PS"; if not, I will be glad
to provide one.

For the latest info about gl2ps and a full list of contributors,
see http://www.geuz.org/gl2ps/.

Please report all bugs and problems to <gl2ps@geuz.org>.

Find a copy of the license in /usr/share/doc/glvis/COPYING.GL2PS