1. Barrett, A.H., Myers, P.C. Microwave thermography, a model of detecting sub-surface thermal patterns. Proceedings of the First European Congress, Amsterdam. Biol Radiol 1975, 6, 45–46.
2. Eldrich, J., Smyth, C.J. Millimetre wave thermography as subcutaneous indicator of joint inflammation. In: Proceedings of the 7th European Microwave Conference, Copenhagen, 1977, 713.
3. Land, D.V. A clinical microwave thermography system. IEE Proceedings 1987, 13, 2, Pt.A.
4. Fraser, S.M., Land, D.V., Sturrock, R.D. Microwave thermography-an index of inflammatory joint disease. Br J Rheumatol 1987, 26, 37–39.
5. Whittaker, E.T., Robinson, G. The calculus of observation, a treatise on numerical mathematics, London, Blackie & Son, 1924.