Racho, P., Wichitsathian, B. and Jindal, R. (2017) “Feasibility of low cost post-treatment options for the anaerobic processes of tapioca starch wastewater: Fungal Down-flow Hanging Sponge (DHS) and Bacterial DHS systems”, Asia-Pacific Journal of Science and Technology, 13(10), pp. 1172–1184. available at: https://so01.tci-thaijo.org/index.php/APST/article/view/83507 (accessed: 8 April 2025).