Fangjiao Jiang Weiyi Meng Xiaofeng Meng Selectivity Estimation for Exclusive Query Translation in Deep Web Data Integration. 595-600 2009 DASFAA http://dx.doi.org/10.1007/978-3-642-00887-0_53 conf/dasfaa/2009 db/conf/dasfaa/dasfaa2009.html#JiangMM09