Sergey Chernov Pavel Serdyukov Matthias Bender Sebastian Michel Gerhard Weikum Christian Zimmer Database Selection and Result Merging in P2P Web Search. 26-37 2005 conf/dbisp2p/2006 DBISP2P http://dx.doi.org/10.1007/978-3-540-71661-7_3 db/conf/dbisp2p/dbisp2p2006.html#ChernovSBMWZ05