Yongpasakornkun, Ratchanon, Supatpong Mattaraj, Karnika Ratanapongleka, Sompop Sanongraj, Tiammanee Rattanaweerapan, and Wipada Dechapanya. “Application of Response Surface Methodology for Statistical Analysis of Treatment of Wastewater from a Para Rubber Plant Using Ozonation”. Science and Engineering Connect 46, no. 4 (December 31, 2023): 387–402. accessed June 30, 2025. https://ph04.tci-thaijo.org/index.php/SEC/article/view/10234.