[3] K. J. Vinoy, R. M. Jha. Radar Absorbing Materials(1996).
[11] L. J. Du Toit. The design of Jauman absorbers. IEEE Antennas Propag. Mag., 36, 17-25(1994).
[13] B. A. Munk. Frequency Selective Surfaces: Theory and Design(2000).
[30] Y. Chen, C.-F. Wang. Characteristic Modes: Theory and Applications in Antenna Engineering(2015).