Ufimtsev, Pyotr Yakovlevich: 'Theory of Edge Diffraction in Electromagnetics: Origination and validation of the physical theory of diffraction' (Electromagnetic Waves, 2009) DOI: IET Digital Library, https://digital-library.theiet.org/;jsessionid=2myeaa54ybgtu.x-iet-live-01content/books/ew/sbew054e