1. Veselago, V. G., "The electrodynamics of substances with simultaneously negative values of ε and µ," Soviet Physics USPEKI, Vol. 10, No. 4, 509-514, 1968.
doi:10.1070/PU1968v010n04ABEH003699
2. Smith, D. R., W. J. Padilla, D. C. Vier, et al. "Composite medium with simultaneously negative permeability and permittivity," Physical Review Letters, Vol. 84, No. 18, 4184-4187, 2000.
doi:10.1103/PhysRevLett.84.4184
3. Enoch, S., G. Tayeb, P. Sabouroux, and P. Vincont, "A metamaterial for directive emission," Physical Review Letters, Vol. 89, No. 21, 1-4, 2002.
doi:10.1103/PhysRevLett.89.213902
4. Pendry, J. B., "Negative refraction males a prefect lens," Physical Review Letters, Vol. 85, No. 21, 3966-3969, 2000.
doi:10.1103/PhysRevLett.85.3966
5. Lindell, L. V., S. A. Tretyakov, K. I. Nikoskinen, and S. Ilvonen, "BW media media with negative paraments, capable of supporting backward waves," Microwave Opt. Tech. Lett., Vol. 31, No. 2, 129-133, 2001.
doi:10.1002/mop.1378
6. Ziolkowski, R. W. and E. Heyman, "Wave propagation in media having negative permittivity and permeability," Phys. Rev. E, Vol. 64, No. 5, 1-15, 2001.
doi:10.1103/PhysRevE.64.056625
7. Hamid, A.-K., "Study of lossy effects on the characteristics of axially slotted circular or elliptical cylindrical antennas coated with metamaterials," Microwaves, Vol. 60, No. 12, 485-490, 2005.
8. Hamid, A.-K., "Axially slotted antenna on a circular or elliptic cylinder coated with metamaterials," Progress In Electromagnetic Research, Vol. 51, 329-341, 2005.
9. The venot, M., C. Cheype, A. Reineix, and B. Jecko, IEEE Trans. Microwave Theory Tech., Vol. 47, 2115, Vol. 47, 1999., 1999.