Shubha U. Nabar Bhaskara Marthi Krishnaram Kenthapadi Nina Mishra Rajeev Motwani Towards Robustness in Query Auditing. 151-162 2006 conf/vldb/2006 VLDB http://www.vldb.org/conf/2006/p151-nabar.pdf db/conf/vldb/vldb2006.html#NabarMKMM06