Ishak, N.S. (2020) “Realization of Circular Slot Frequency Selective Surfaces using Photoplotter and Wet Etching Technique for Terahertz Material Sensing Applications”, International Journal of Integrated Engineering, 12(6), pp. 49–54. Available at: https://journal.uthm.edu.my/index.php/ijie/article/view/6287 (Accessed: 7 August 2026).