1. Theory of sound diffraction around absorbing barrier;Pierce,1975
2. Diffraction of an E-polarised plane wave by an imperfectly conducting wedge;Williams,1959
3. Excitation, reflection and emission of surface waves from a wedge with given face impedances;Malyuzhinets;Soviet Physics Doklady,1958
4. Geometric theory of diffraction;Keller;Journal of the Optical Society of America,1962