Heinz Stockinger Asad Samar Koen Holtman William E. Allcock Ian T. Foster Brian Tierney File and Object Replication in Data Grids. 76-86 2001 conf/hpdc/2001 HPDC http://csdl.computer.org/comp/proceedings/hpdc/2001/1296/00/12960076abs.htm db/conf/hpdc/hpdc2001.html#StockingerSHAFT01