The following copyright statement should be used. If you have a convincing reason to use a different one, talk to release-team.

The Athena source code was obtained from the Athena SVN repository at
<svn://debathena.mit.edu/athena/trunk>, and is licensed as follows:

  Copyright © 2008 by the Massachusetts Institute of Technology.

  Permission to use, copy, modify, and distribute this software and
  its documentation for any purpose and without fee is hereby granted,
  provided that the above copyright notice appear in all copies and
  that both that copyright notice and this permission notice appear in
  supporting documentation, and that the name of M.I.T. not be used in
  advertising or publicity pertaining to distribution of the software
  without specific, written prior permission.  M.I.T. makes no
  representations about the suitability of this software for any
  purpose.  It is provided "as is" without express or implied
  warranty.

The Debian packaging is Copyright © 2008 Massachusetts Institute of
Technology, and has the same license as the original software.