Thuy, Le Thi Xuan, Le Thi Suong, Nguyen Thi Sao Mai, and Kunihiko Kato. “Evaluating the Possibility of Removing Ni²⁺ Ion from Aqueous Solution by Artificial Stone”. Version B of Vietnam Journal of Science and Technology 60, no. 6 (June 25, 2018). Accessed November 15, 2026. https://b.vjst.vn/index.php/ban_b/article/view/607.