Govind Kabra Ravishankar Ramamurthy S. Sudarshan Redundancy and information leakage in fine-grained access control. 133-144 2006 conf/sigmod/2006 SIGMOD Conference http://doi.acm.org/10.1145/1142473.1142489 db/conf/sigmod/sigmod2006.html#KabraRS06