Oktavia V, Darvina Y, Ramli R, Hidayat R. Effect of Variations in Banana Frond Fiber Composition with Polyurethane Matrix on Composite Panels Acoustic Properties and Porosity. Department of Physics, Universitas Negeri Padang [Internet]. 2023 Jun. 10 [cited 2024 Nov. 21];1(1):30-45. Available from: https://jeap.ppj.unp.ac.id/index.php/jeap/article/view/3