Nguyen, T. H., T. T. Tran, P. D. Nguyen, and M. S. Lee. “A Green Approach to Recovering Lithium and Cobalt from Spent Lithium-Ion Batteries Using Dilute HCl Solution Mixed With H. Sabdariffa Flower Extract As a Leaching Agent”. Journal of Mining and Metallurgy, Section B: Metallurgy, Vol. 60, no. 2, Nov. 2024, pp. 215-2, https://aseestant.ceon.rs/index.php/jmm/article/view/48513.