Sanjay Agrawal Kaushik Chakrabarti Surajit Chaudhuri Venkatesh Ganti Arnd Christian König Dong Xin Exploiting web search engines to search structured databases. 501-510 2009 WWW http://doi.acm.org/10.1145/1526709.1526777 conf/www/2009 db/conf/www/www2009.html#AgrawalCCGKX09