Copyright for gap-polycyclic source package in Bionic

Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: Polycyclic
Source: ftp://ftp.gap-system.org/pub/gap/gap4/tar.bz2/packages/

Files: *
Copyright: Copyright 2013 Bettina Eick , Werner Nickel, Max Horn 
License: GPL-2+

Files: debian/*
Copyright: Copyright 2013 Bill Allombert 
License: GPL-2+

License: GPL-2+
 The polycyclic package is free software; you can redistribute 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 opinion) any later version.
 .
 The polycyclic package 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.
 .
 On Debian systems, the complete text of the GNU General Public License
 version 2 can be found in ‘/usr/share/common-licenses/GPL-2’.