1. MIT Radiation Laboratory Series,1951
2. N. I. Durlach, “Influence of the Earth’s Surface on Radar,” Technical Report 373 (ESD-TDR-65-32), Contract AF 19(628)-500, AD-627 635, Lincoln Laboratory, Massachusetts Institute of Technology, January 1965.
3. M. Katzin, “Reflection and Transmission of Radio Waves,” in Airborne Radar, D. J. Povejsil, R. S. Raven, and P. Waterman (Eds.), D. Van Nostrand Company, New York, 1961, chap. 4.
4. M. W. Long, Radar Reflectivity of Land and Sea, 2nd Edition, Artech House, Inc., Dedham, MA, 1983, chap. 4.
5. IEEE Standard Radar Definitions, IEEE Std 686-1982, Institute of Electrical and Electronics Engineers, New York, 1982.