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1. Simon Ramo, John R. Whinnery and Theodore van Duzer, Fields and Waves in Communication Electronics, third edition, John Wiley & Sons, New York, 1994.
2. John D. Kraus and Daniel Fleisch, Electromagnetics, fifth edition, McGraw-Hill, 1999.
3. Milton Abramowitz and Irene A. Stegun, Handbook of Mathematical Functions, Dover Publications, New York, 1972.
4. C.G. Montgomery, Technique of Microwave Measurements, Volume 11 of MIT Radiation Laboratory Series, McGraw-Hill, New York, 1947.