Mohamad Isa, M., R. Langley, S. Khamas, A. Awang Md Isa, M. M.Zain, F. Johar, and Z. Zakaria. “Antenna Beam Steering Using Sectorized Square EBG”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), vol. 4, no. 1, June 2012, pp. 39-44, https://jtec.utem.edu.my/jtec/article/view/473.