Copyright for r-cran-rsdmx source package in Bionic

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: rsdmx 
Upstream-Contact: Emmanuel Blondel 
Source: https://cran.r-project.org/package=rsdmx
Files-Excluded: MD5 inst/extdata/*
Comment:
  Data testfiles are not included because they come from websites run by
  international organizations. Hence their copyright status is at best unclear.

Files: *
Copyright: 2013-2017 Emmanuel Blondel, Matthieu Stigler]
License: GPL-2+

Files: debian/*
Copyright: 2015-2016 Sébastien Villemot 
License: GPL-2+

License: GPL-2+
 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, see
 .
 .
 On Debian systems, the complete text of the GNU General Public
 License, version 2, can be found in the file
 `/usr/share/common-licenses/GPL-2'.