Wonglertarak, Watcharapol, Boonchai Wichitsathian, Phongthon Saengchut, and Borano Te. 2024. “Improving anaerobic digestion of various sludge types through alkaline pretreatment”. Engineering and Applied Science Research 51 (5):673-79. https://ph01.tci-thaijo.org/index.php/easr/article/view/256253.