Jiarawattananon, Mateekul, Thanakorn Wasanapiarnpong, and Charusporn Mongkolkachit. 2019. “Utilization of Lignite Ash As Raw Materials for Ceramic Tile”. Journal of Metals, Materials and Minerals 29 (4). Bangkok, Thailand. https://doi.org/10.55713/jmmm.v29i4.475.