1. IEEE Standard Definitions of Terms for Antennas 1993
2. G. J. Burke A. J. Poggio Numerical Electromagnetics Code NEC-Method of Moments NOSC TD 116 1 2 1981
3. Electrical oscillations in wires;Pocklington,1897
4. Theoretical investigation into transmitting and receiving qualities of antennae;Hall��n;Nova Acta Regiae Soc. Ser. Upps.,1938