/usr/share/doc/libgeographiclib5/AUTHORS is in libgeographiclib5 1.8-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | Charles Karney <charles@karney.com>
Francesco Paolo Lovergine <frankie@debian.org> (autoconfiscation)
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