1. Abramowitz , M. I. A. Stegun Handbook of Mathematical Functions, Appl. Math. Ser 55 National Bureau of Standards, U.S. Dep. of Commerce Washington, D. C. 1964
2. Burke , G. J. A. J. Poggio Numerical electromagnetic code (NEC) - Method of moments, parts I, II, and III San Diego, Calif. 1981
3. Casey , J. P. Dielectrically loaded wire antennas Storrs 1987
4. Celwave Systems, Inc. Rigid coaxial transmission lines and FM broadcast antennas, Cat 779 Marlboro, N. J. 1985