Zhang, Huawei, Xiuli Liu, Li Wang, and Peng Liang. “Effects of Acid Treatments on Surface Property and Mercury Removal Performance of Lignite Semi-Coke”. Asian Journal of Chemistry 26, no. 19 (September 18, 2014): 6317–6322. Accessed July 17, 2024. https://asianpubs.org/index.php/ajchem/article/view/26_20_4.