(1) Diffraction of an electromagnetic plane wave by a thick slit, IEEE Transation on Antennas and Propagation, vol. AP-26, no. 3, pp. 494-499, 1978.

(2) High frequnecy expression for the field in the caustic region of a reflector using Maslov's method, Radio Science, vol. 21, pp. 911-919, 1986.

(3) Diffraction of electromagnetic plane wave by a rectangular plate and a rectangular hole in the conducting plate, IEEE Transation on Antennas and Propagation, vol. AP-47, no. 6, pp. 494-499, 1978.