1. IEEE Standard Definitions of Terms for Antennas
2. NOSC Tech. Document 116 (TD 116);Burke
3. Electrical oscillations in wires;Pocklington;Proc. Cambridge Phys. Soc. London,1897
4. Theoretical investigation into transmitting and receiving qualities of antennae;Hall��n;Nova Acta Regiae Soc. Ser. Upps.