1. Radiation and Scattering of Waves;Felsen,1973
2. The Foundations of Acoustics;Skudrzyk,1971
3. Electromagnetic and Acoustic Scattering by Simple Shapes,1987
4. Asymptotic Methods in Short-Wavelength Diffraction Theory;Babich,1989
5. Introduction to the Uniform Geometrical Theory of Diffraction;McNamara,1990