Gyu Kim, Cheol. “Humic Substances from Daecheung Lake Sediment and Their Removal Efficiency by Alum Coagulation”. Asian Journal of Chemistry 24, no. 9 (May 11, 2012): 4171–4176. Accessed July 23, 2024. https://asianpubs.org/index.php/ajchem/article/view/9576.