Yanxiang He Haowen Liu Naixue Xiong Laurence Tianruo Yang Selecting News and Elders in Unstructured Peer-to-Peer Network under Churn. 1579-1584 2008 AINA Workshops http://doi.ieeecomputersociety.org/10.1109/WAINA.2008.67 conf/aina/2008w db/conf/aina/ainaw2008.html#HeLXY08