1. B. C. Dietrich, J. Warren L. Stutzman, B. K. Kim, and K. Dietze, IEEE Antennas and Propagation Magazine 42, (2000).
2. Smart antennas
3. J. Liu, J. Xia, and G. Wang, Microwave antenna propagation and EMC Technologies for Wireless Communication, 504–507 (2007).
4. J. James, and P.S. Hall, Peter Peregrinus, London, UK, (1989).
5. R. Garg, P. Bartia, I. Bahl, and A. Ittipiboon, Artech House Inc. Norwood, MA 1-68, 253–316 (2001)