Jens Bleiholder Karsten Draba Felix Naumann FuSem - Exploring Different Semantics of Data Fusion. 1350-1353 2007 conf/vldb/2007 VLDB http://www.vldb.org/conf/2007/papers/demo/p1350-bleiholder.pdf db/conf/vldb/vldb2007.html#BleiholderDN07