Magnus Karlsson Christos T. Karamanolis Choosing Replica Placement Heuristics for Wide-Area Systems. 350-359 2004 conf/icdcs/2004 ICDCS http://csdl.computer.org/comp/proceedings/icdcs/2004/2086/00/20860350abs.htm db/conf/icdcs/icdcs2004.html#KarlssonK04