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2. E. G. Fan, C. E. Baum, and C. J. Buchenauer, “Impulse Radiating Antennas, Part II, pp. 159–178 In: L. Carin et al (eds.), Ultra Wideband/Short-Pulse Electromagnetics 2, Plenum Press, New York, 1995.
3. E. G. Fan and C. E Baum, Impulse Radiating Antennas With Two Refracting or Reflecting Surfaces, Sensor and Simulation Note 379, May 1995.
4. C. E. Baum, J. J. Sadler, and A. P. Stone, Uniform Isotropic Dielectric Equal-Time Lenses for Matching Combinations of Plane and Spherical Waves, Sensor and Simulation Note 352, December 1992.
5. E. G. Farr, Optimizing the Feed Impedance of Impulse Radiating Antennas, Part I: Reflector IRAs, Sensor and Simulation Note 354, January 1993.