Gilles Nachouki Multi-Data Source Fusion in PDMS. 68-80 2008 DBISP2P http://www.vldb.org/conf/2008/workshops/WProc_dbisp2p08/Paper_15.pdf conf/dbisp2p/2008 db/conf/dbisp2p/dbisp2p2008.html#Nachouki08