Kaewdee, C. “The optimum mix ratio of local materials in Nakhon Si Thammarat for the production of low-temperature refractory bricks”. Academic Journal of Industrial Technology Innovation, vol. 1, no. 2, Aug. 2023, pp. 27-38, https://ph03.tci-thaijo.org/index.php/AJITI/article/view/2533.