Thongkhwan, T., T. Kuasakul, C. Laksanakit, N. Chusilp, W. Tabyang, A. Lukjan, P. Sookmanee, and P. Chumprom. “Utilization of Waste Materials Rubberwood Bottom Ash in the Production of Hollow Non-Load-Bearing Concrete Masonry Unit”. Research on Modern science and Utilizing Technological Innovation Journal (RMUTI Journal), vol. 18, no. 2, Aug. 2025, pp. 67-80, https://ph01.tci-thaijo.org/index.php/rmutijo/article/view/260303.