1. P. Beckmann,Probability in Communication Engineering (Harcourt, Brace, and World, New York, 1967), pp. 142?150.
2. Ibid., pp. 118?121.
3. Ibid., pp. 115?118.
4. P. Beckmann and A. Spizzichino,The Scattering of Electromagnetic Waves from Rough Surfaces (The Macmillan Company, New York, 1963), p. 119.
5. Ibid., pp. 20, 21, 29.