A. Meneely, and L. Williams. Proceedings of the 16th ACM conference on Computer and communications security, page 453--462. New York, NY, USA, ACM, (2009)
U. O'Reilly. IEEE International Conference on Systems, Man, and
Cybernetics, Computational Cybernetics and Simulation, 5, page 4092--4097. Orlando, Florida, USA, (12-15 October 1997)