1. Wylde, R.J. (1984), Millimetre-wave Gaussian beam-mode optics and corrugated feed horns, Proc IEE Part H(131), pp 258–262.
2. Martin, D.H. (Sept 1995) Lecture notes on Millimetre-wave and Terahertz Optics, Lecture 1, & Clemmow.,P.C. The Plane-Wave Spectrum Representation of Electromagnetic Fields, Pergamon.
3. Martin, D.H. and Lesurf, J.C.G. (1978) Submillimetre-wave Optics, Infrared Physics 18, 405–412;
4. Kogelnik, H. and Li, T. (1966) Laser Beams and Resonators, App.Optics 5, 1550–1567.
5. Foster, R.P. and Wylde, R.J. (1992) The Effect of Quasi-optics Errors on Reflector Antenna Performance, IEEE Trans MTT40, 1318–1322.