Gong, Lianyuan, Li Feng, Xiaowei Feng, and Xiaohui Yu. “Research on Eliminating Hardness in Water by Mesoporous Material”. Asian Journal of Chemistry 26, no. 18 (September 3, 2014): 6261–6265. Accessed July 23, 2024. https://asianpubs.org/index.php/ajchem/article/view/26_19_74.