Copyright for clustalx source package in Bullseye

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Source: http://www.clustal.org/download/current/clustalx-2.1.tar.gz
Upstream-Contact: clustalw@ucd.ie

Files: *
Copyright: © Des Higgins, Julie Thompson and Toby Gibson
License: LGPL-3+
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU Lesser General Public License as published by
 the Free Software Foundation, either version 3 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 Lesser General Public License for more details.
 .
 You should have received a copy of the GNU Lesser General Public License
 along with this program.  If not, see .
Comment:
 On Debian systems, you can read the full text of the GNU Lesser General Public
 License in ‘/usr/share/common-licenses/LGPL-3’.

Files: debian/*
Copyright: © 1998-1999 Stephane Bortzmeyer 
           © 2001 Dr. Guenter Bechly 
           © 2001 Adrian Bunk 
           © 2001-2002 Andreas Tille 
           © 2003-2008 Steffen Möller 
           © 2006 Kai Hendry 
           © 2007 Nelson A. de Oliveira 
           © 2007–2011 Charles Plessy 
License: Unclear
 The licence of the earlier works was never stated. Some works have been
 obsoleted by release of version 2.0 — the lesstif migration for instance —
 but authors are left in the list of copyright holders by courtesy. The work
 of Charles Plessy and Steffen Möller can be treated as if it were public domain.