/usr/share/doc/libustr-doc/AUTHORS is in libustr-doc 1.0.4-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | James Antill
Markus Kuhn - utf8 work.
Paul Rosenfeld - ustr_sub / ustr_sc_sub / ustr_sc_replace
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