PUTRA A, Abd KHAIR FB, Mohd NOR MJ. Utilizing Hollow-Structured Bamboo as Natural Sound Absorber. Arch. Acoust. [Internet]. 2015 Dec. 31 [cited 2026 Mar. 4];40(4):601–608. Available from: https://acoustics.ippt.gov.pl/index.php/aa/article/view/1541