MOHD SARI, K. A.; MAT, S.; BADRI, K.; M. SANI, A. R. Properties of Structural Lightweight Concrete Filled with Palm-Based Polyurethane. International Journal of Integrated Engineering, [S. l.], v. 6, n. 1, 2014. Disponível em: https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/881. Acesso em: 26 jun. 2022.