Lam, Tran Dai, Pham Thanh Huyen, and Nguyen Han Long. 2007. “Study of the Peptizability of Boehmite and Its Application for the Formation of γ-Al2O3 in Spherical Shape”. ASEAN Journal of Chemical Engineering 7 (2), 137-40. https://dev.journal.ugm.ac.id/v3/AJChE/article/view/7687.