Ishak, N. S. ., Dahri, M. H. ., Awang, N. .A. ., Chong, W. Y. ., & Seman, F. C. . (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), 49-54. https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/6287