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 August 7, 2026. https://journal.uthm.edu.my/index.php/ijie/article/view/9501.