Chen-Liang Fang De-Ron Liang Chyouhwa Chen PuSan Lin A Redundant Nested Invocation Suppression Mechanism for Active Replication Fault-Tolerant Web Service. 9-16 2004 conf/eee/2004 EEE http://csdl.computer.org/comp/proceedings/eee/2004/2073/00/20730009abs.htm db/conf/eee/eee2004.html#FangLCL04