Phong, M. T., T. D. Hai, and P. D. Tuan. “Effects of Fluxing Agents on Filter Aids Prepared from Lam-Dong Diatomate”. ASEAN Journal of Chemical Engineering, Vol. 12, no. 2, Dec. 2012, pp. 27-34, https://journal.ugm.ac.id/v3/AJChE/article/view/8129.