A. D. Wyner,"The wire-tap channel," Bell Syst. Tech. J., 54(8):210,
 S. K. Leung Yan Cheong and M. E. Hellman,"The Gaussian wire-tap
channel," IEEE Trans. on Information Theory, 24(4):451-456, July 1978.
 U. M. Maurer,"Secret key agreement by public discussion from common
information," IEEE Trans. on Information Theory, vol. 39, pp. 733742,
 R. Ahlswede and I. Csiszar,"Common randomness in information theory
and cryptography, part I: Secret sharing," IEEE Trans. on Information
Theory, vol. 39, pp. 11211132, July 1993.
 I. Csiszar and J. Korner,"Broadcast channels with confidential messages,"
IEEE Trans. on Information Theory, 24(3):339-348, May 1978.
 I. E. Telatar,"Capacity of multi-antenna Gaussian channels," European
Trans. Telecommunications, 10:585-595, November 1999.
 R. Negi and S. Goel,"Secret communication using artificial noise,"IEEE
Vehicular Technology Conference, Toulouse, France, May 2006.
 P. Parada and R. Blahut,"Secrecy capacity of SIMO and slow fading channels,"
IEEE International Symposium on Information Theory, Adelaide,
Australia, September 2005.
 J. Barros and M. Rodrigues,"Secrecy capacity of wireless channels," IEEE
International Symposium on Information Theory, USA, 2006
 M. Bloch, J. Barros, M. Rodrigues and S. Mclaughlin,"Wireless information
theoretic security," IEEE Transactions on Information Theory, vol.
54, no. 6, pp. 2515-2534, June 2008.
 S. Shafiee and S. Ulukus,"Achievable rates in Gaussian MISO channels
with secrecy constraints," In IEEE International Symposium on Information
Theory, Nice, France, June 2007.
 Z. Li, W. Trappe, and R. D. Yates,"Secret communication via multi
antenna transmission," 41st Conference on Information Sciences and
Systems, Baltimore, MD, March 2007.
 A. Khisti, G. Wornell, A. Wiesel, and Y. Eldar,"On the Gaussian MIMO
wiretap channel," IEEE International Symposium on Information Theory,
Nice, France, June 2007.
 A. Khisti and G. Wornell,"Secure transmission with multiple antennas:
The MISOME wiretap channel," Submitted to IEEE Trans. on Information
 T. Cover and J. Thomas, Elements of Information Theory Wiley, 1991.
 R. A. Horn and C. R. Johnson, Matrix Analysis, Cambridge University
 X. Li and E. P. Ratazzi,"MIMO transmissions with information theoretic
secrecy for secret key agreement in wireless networks," IEEE Military
Communications Conference (MILCOM2005), 2005. Atlantic City, NJ.
 X. Li, M. Chen, and E. P. Ratazzi,"Space time transmissions for
wireless secret key agreement with information-theoretic secrecy," IEEE
International Workshop on Signal Processing Advances in Wireless
Communications (SPAWC05), 2005. The Italian Academy at Columbia
University, New York.
 P. Viswanath and D. Tse,"Fundamentals of wireless communications,"
class notes for ECE 459, Department of Electrical and Computer Engineering,
University of Illinois at Urbana Champaign, Fall 2003.
 S. Shafiee, N. Liu and S. Ulukus,"Secrecy Capacity of the 2-2-1
Gaussian MIMO Wire-tap Channel," ISCCSP, 2008
 A. Paulraj, R. Nabar, and D. Gore (2003) Introduction to Space-Time
Wireless Communications, Cambridge, U.K.: Cambridge Univ. Press