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Hamdan NI, Zainulabidin MH, Kasron MZ, Mohd Kassim AS, Ismail AE. Effect of Perforation Size on Sound Absorption Characteristics of Membrane Absorber. IJIE [Internet]. 2018 Sep. 3 [cited 2026 Aug. 7];10(4). Available from: https://journal.uthm.edu.my/index.php/ijie/article/view/2335