1. Chen, H.-M., Y.-F. Lin, C.-C. Kuo, and K.-C. Huang, "A compact dual-band microstrip-fed monopole antenna,", Vol. 2, 124-127, 2001.
doi:10.1109/TMTT.2006.877811
2. Chen, S.-B., Y.-C. Jiao, W. Wang, and F.-S. Zhang, "Modified T-shaped planar monopole antennas for multiband operation," IEEE Trans. Microw. Theory Tech., Vol. 54, 3267-3270, 2006.
doi:10.2528/PIER10083001
3. Liao, W.-J., S.-H. Chang, and L.-K. Li, "A compact planar multiband antenna for integrated mobile devices," Progress In Electromagnetics Research, Vol. 109, 1-16, 2010.