Upstream source location: http://swaj.net/unix/index.html#cdck

Files: *
Copyright: © Alexey Semenoff (c) 2005-2008
License: GPL2+
 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.

Files: src/lib_cdinfo.*
Copyright: 
 © 1996,1997  Gerd Knorr <kraxel@cs.tu-berlin.de>
 © 1996,1997  Heiko Eissfeldt <heiko@colossus.escape.de>"
License: GPL   
 http://www.ibiblio.org/pub/linux/utils/disk-management/cdinfo.c
 http://www.ibiblio.org/pub/Linux/utils/disk-management/cdinfo.lsm

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