1. R. C. Hansen, Microwave Scanning Antennas, Academic Press, New York, London (1964), Vol. 1.
2. H. G. Booker and P. C. Klemmow, J. IEE, 97, 11 (1950).
3. A. Z. Fradin, Microwave Antennas [in Russian], Sovetskoe Radio, Moscow (1957).
4. L. D. Bakhrakh and G. K. Galimov, Reflector Scanning Antennas: Theory and Calculation Techniques [in Russian], Nauka, Moscow (1981).
5. C. E. Baum, in: Bertroni, et al., eds., U-WB, Short-Pulse Electromagnetics, Plenum Press (1993).