Mohd Zizwan, M. Z. ., and F. Mohamed Yusop. “The Potential of Chaff Insulation Panel for Sound Absorption and Thermal Properties”. Progress in Engineering Application and Technology, vol. 3, no. 2, Dec. 2022, pp. 270–278, https://publisher.uthm.edu.my/periodicals/index.php/peat/article/view/7882.