Md Ali, Siti Adlina, Maisarah Abu, and Siti Normi Zabri. “Spectrum Absorbency of Metamaterial Perfect Absorber”. International Journal of Integrated Engineering 14, no. 1 (March 7, 2022): 215–222. Accessed July 18, 2024. https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/9501.