Okutani T, Ichikawa E, Nagai H, Hashimoto T, Makihata T. Crystalline silica in compressed rice hull coke ash. J Met Mater Miner [Internet]. 2018 Jun. 27 [cited 2024 Nov. 24];28(1). Available from: https://jmmm.material.chula.ac.th/index.php/jmmm/article/view/355