M. Ghogho and A. Swami, “Physical Layer Secrecy of MIMO Communications in the Presence of a Poisson Random Field of Eavesdroppers,” IEEE ICC Workshop on Physical Layer Security, Kyoto, Japan, June 2011, pp. 1-5.
 M. Ghogho and Ananthram, “Physical Layer Security of MIMO frequency selective channels by beamforming and noise generation,” European Signal Processing Conference, Barcelona, Spain, Augest 2011, pp. 829-833.
 E. Ekrem and S. Ulukus, “The Secrecy Capacity Region of the Gaussian MIMO Multi-Receiver Wiretap Channel,” IEEE Transactions on Information Theory, Vol. 57, No. 4, 2011, pp. 2083-2113. doi:10.1109/TIT.2011.2111750
 A. Khisti and G. W. Wornell, “Secure Transmission with Multiple Antennas Part II: The MIMOME Wiretap Channel,” IEEE Transactions on Information Theory, Vol. 56, No. 11, 2010, pp. 5515-5532. doi:10.1109/TIT.2010.2068852
 A. Khisti and G. W. Wornell, “Secure Transmission with Multiple Antennas I: The MISOME Wiretap Channel,” IEEE Transactions on Information Theory, 2010, Vol. 56, No. 11, pp. 3088-3104. doi:10.1109/TIT.2010.2048445
 X. Zhou and M. R. Mckay, Secure Transmission with Artificial Noise over Fading Channels: Achievable Rate and Optimal Power Allocation, International Conference Signal Processing and Communication Systems, Omaha, NE, Oct. 2010, pp. 3831-3842.
 A. Mukherjee and A. L. Swindlehurst, “User Election in Multi-user MIMO Systems with Secrecy Considerations,” ASILOMAR Conf. on Signals, Systems, and Computers, Pacific Grove, CA, 2009, pp. 1479-1482.