Pau-Chen Cheng Pankaj Rohatgi Claudia Keser Paul A. Karger Grant M. Wagner Angela Schuett Reninger Fuzzy Multi-Level Security: An Experiment on Quantified Risk-Adaptive Access Control. 222-230 2007 conf/sp/2007 IEEE Symposium on Security and Privacy http://dx.doi.org/10.1109/SP.2007.21 db/conf/sp/sp2007.html#ChengRKKWR07