Hamdan, N. I., Zainulabidin, M. H., Kasron, M. Z., Mohd Kassim, A. S. and Ismail, A. E. (2018) “Effect of Perforation Size on Sound Absorption Characteristics of Membrane Absorber”, International Journal of Integrated Engineering, 10(4). Available at: https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/2335 (Accessed: 25January2021).