Trang, Nguyen Thi Minh, Nguyen Thi Thanh Huong, and Ngo Anh Dao Ho. “Using Recycled Coal Ash from Thermal Power Plants and Rice Husk Ash as Alternative Aggregates for the Manufacturing of Terrazzo Tiles: 10.32526/ennrj/23/20240221”. Environment and Natural Resources Journal 23, no. 2 (February 24, 2025): 151–164. accessed March 30, 2025. https://ph02.tci-thaijo.org/index.php/ennrj/article/view/255346.