1. H.M. Nussenzveig, “Solution of diffraction problem, 1. The wide double wedge, 2. The narrow double wedge,” Phil. Trans. Royal Soc. London, ser. A, vol. 252, pp. 1–51, Oct. 1959.
2. K. Hongo, “Diffraction by a flanged parallel-plate waveguide,” Radio Sci., vol. 7, no. 10, pp. 955–963, Oct. 1972.
3. M. S. Leong, P. S. Kooi, and Chandra, “Radiation from a flanged parallel-plate waveguide: Solution by moment method with inclusion of edge condition,” IEE Proceedings, vol. 135, pt. H, no. 4, pp. 249–255, Aug. 1988.
4. S. W. Lee and L. Grun, “Radiation from flanged waveguide: Comparison of solutions,” IEEE Trans. Antennas Propagat., vol. 30, no. 1, Jan. 1982.
5. A. Michaeli, “A new asymptotic high-frequency analysis of electromagnetic scattering by a pair of parallel wedge: Closed form results,” Radio Sci., vol. 20, no. 6, pp. 1537–1548, Nov.-Dec. 1985.