1. Driving point impedance of a narrow-gap antenna system;Mushiake;J. Inst. Elec. Engin.,1949
2. Three dimensional self-complementary antenna;Kasahara;Trans. I.E.C.E. (B),1982
3. LOG-PERIODIC ANTENNAS
4. 4-terminal circularly-polarized self-complementary antenna;Kasahara;Trans. I.E.C.E. (B),1982