John R. Douceur Atul Adya William J. Bolosky Dan Simon Marvin Theimer Reclaiming Space from Duplicate Files in a Serverless Distributed File System. 617-624 2002 ICDCS http://computer.org/proceedings/icdcs/1585/15850617abs.htm db/conf/icdcs/icdcs2002.html#DouceurABST02