Muchtar, A., N. Wati, and N. A. Jaafar. “Deagglomeration of High Purity Fine Alumina Powder via PH Control”. ASEAN Journal of Chemical Engineering, Vol. 2, no. 1, Dec. 2002, pp. 55-60, https://dev.journal.ugm.ac.id/v3/AJChE/article/view/7527.