Heng Chang Weijia Jia Ling Zhang Distributed Server Selection with Imprecise State for Replicated Server Group. 73-78 2004 conf/ispan/2004 ISPAN http://doi.ieeecomputersociety.org/10.1109/ISPAN.2004.1300460 db/conf/ispan/ispan2004.html#ChangJZ04